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Whenever I add cordova-plugin-intercom to the solution I get an error during build at :app:transformClassesWithStackFramesFixerForDebug. Added whole output below. Project is an empty Cordova plugin with nothing but the plugin installed. Assistance is appreciated. Stacktrace added below. I am using the latest Cordova version.

For now, what I've tried is:

  1. cordova clean
  2. reinstall ionic and cordova
  3. updated gradle, android studio and any support libraries required
  4. Upgraded to cordova-android 7.1.4


C:\Development\IntercomTest>cordova build android Android Studio project detected ANDROID_HOME=C:\Users\alan.grixti\AppData\Local\Android\sdk JAVA_HOME=C:\Program Files\Java\jdk1.8.0_131 studio Subproject Path: CordovaLib Subproject Path: app Starting a Gradle Daemon (subsequent builds will be faster) publishNonDefault is deprecated and has no effect anymore. All variants are now published. Download https://jcenter.bintray.com/com/android/tools/build/gradle/maven-metadata.xml Download https://maven.google.com/com/android/tools/build/gradle/maven-metadata.xml Configuration 'compile' in project ':app' is deprecated. Use 'implementation' instead. The Task.leftShift(Closure) method has been deprecated and is scheduled to be removed in Gradle 5.0. Please use Task.doLast(Action) instead.
        at build_1qfn21zmft731guegshputeki.run(C:\Development\IntercomTest\platforms\android\app\build.gradle:150) Download https://jcenter.bintray.com/io/intercom/android/intercom-sdk-base/maven-metadata.xml :CordovaLib:preBuild UP-TO-DATE :CordovaLib:preDebugBuild UP-TO-DATE :CordovaLib:compileDebugAidl UP-TO-DATE :CordovaLib:compileDebugRenderscript UP-TO-DATE :CordovaLib:checkDebugManifest UP-TO-DATE :CordovaLib:generateDebugBuildConfig UP-TO-DATE :CordovaLib:prepareLintJar UP-TO-DATE :CordovaLib:generateDebugResValues UP-TO-DATE :CordovaLib:generateDebugResources UP-TO-DATE :CordovaLib:packageDebugResources UP-TO-DATE :CordovaLib:platformAttrExtractor UP-TO-DATE :CordovaLib:processDebugManifest UP-TO-DATE :CordovaLib:processDebugResources UP-TO-DATE :CordovaLib:generateDebugSources UP-TO-DATE :CordovaLib:javaPreCompileDebug UP-TO-DATE :CordovaLib:compileDebugJavaWithJavac UP-TO-DATE :CordovaLib:processDebugJavaRes NO-SOURCE :CordovaLib:transformClassesAndResourcesWithPrepareIntermediateJarsForDebug UP-TO-DATE :app:preBuild UP-TO-DATE :app:preDebugBuild UP-TO-DATE :app:compileDebugAidl UP-TO-DATE :CordovaLib:packageDebugRenderscript NO-SOURCE :app:compileDebugRenderscript UP-TO-DATE :app:checkDebugManifest UP-TO-DATE :app:generateDebugBuildConfig UP-TO-DATE :app:prepareLintJar UP-TO-DATE :app:generateDebugResValues UP-TO-DATE :app:generateDebugResources UP-TO-DATE :app:mergeDebugResources UP-TO-DATE :app:createDebugCompatibleScreenManifests UP-TO-DATE :app:processDebugManifest UP-TO-DATE :app:splitsDiscoveryTaskDebug UP-TO-DATE :app:processDebugResourcesC:\Users\alan.grixti\.gradle\caches\transforms-1\files-1.1\appcompat-v7-28.0.0.aar\781a7646a099cfab576de3a8299207af\res\values-v28\values-v28.xml:9:5-12:13: AAPT: error: resource android:attr/dialogCornerRadius not found.

C:\Development\IntercomTest\platforms\android\app\build\intermediates\incremental\mergeDebugResources\merged.dir\values-v28\values-v28.xml:11: AAPT: error: resource android:attr/dialogCornerRadius not found.

C:\Users\alan.grixti\.gradle\caches\transforms-1\files-1.1\appcompat-v7-28.0.0.aar\781a7646a099cfab576de3a8299207af\res\values\values.xml:1304:5-69: AAPT: error: resource android:attr/fontVariationSettings not found.

C:\Users\alan.grixti\.gradle\caches\transforms-1\files-1.1\appcompat-v7-28.0.0.aar\781a7646a099cfab576de3a8299207af\res\values\values.xml:1304:5-69: AAPT: error: resource android:attr/ttcIndex not found.

C:\Development\IntercomTest\platforms\android\app\build\intermediates\incremental\mergeDebugResources\merged.dir\values-v28\values-v28.xml:7: error: resource android:attr/dialogCornerRadius not found. 

C:\Development\IntercomTest\platforms\android\app\build\intermediates\incremental\mergeDebugResources\merged.dir\values-v28\values-v28.xml:11: error: resource android:attr/dialogCornerRadius not found.

C:\Development\IntercomTest\platforms\android\app\build\intermediates\incremental\mergeDebugResources\merged.dir\values\values.xml:644: error: resource android:attr/fontVariationSettings not found.

C:\Development\IntercomTest\platforms\android\app\build\intermediates\incremental\mergeDebugResources\merged.dir\values\values.xml:644: error: resource android:attr/ttcIndex not found. error: failed linking references.

Failed to execute aapt com.android.ide.common.process.ProcessException: Failed to execute aapt at com.android.builder.core.AndroidBuilder.processResources(AndroidBuilder.java:796) at com.android.build.gradle.tasks.ProcessAndroidResources.invokeAaptForSplit(ProcessAndroidResources.java:551) at com.android.build.gradle.tasks.ProcessAndroidResources.doFullTaskAction(ProcessAndroidResources.java:285) at com.android.build.gradle.internal.tasks.IncrementalTask.taskAction(IncrementalTask.java:109) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.gradle.internal.reflect.JavaMethod.invoke(JavaMethod.java:73) at org.gradle.api.internal.project.taskfactory.DefaultTaskClassInfoStore$IncrementalTaskAction.doExecute(DefaultTaskClassInfoStore.java:173) at org.gradle.api.internal.project.taskfactory.DefaultTaskClassInfoStore$StandardTaskAction.execute(DefaultTaskClassInfoStore.java:134) at org.gradle.api.internal.project.taskfactory.DefaultTaskClassInfoStore$StandardTaskAction.execute(DefaultTaskClassInfoStore.java:121) at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter$1.run(ExecuteActionsTaskExecuter.java:122) at org.gradle.internal.progress.DefaultBuildOperationExecutor$RunnableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:336) at org.gradle.internal.progress.DefaultBuildOperationExecutor$RunnableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:328) at org.gradle.internal.progress.DefaultBuildOperationExecutor.execute(DefaultBuildOperationExecutor.java:197) at org.gradle.internal.progress.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:107) at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeAction(ExecuteActionsTaskExecuter.java:111) at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeActions(ExecuteActionsTaskExecuter.java:92) at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.execute(ExecuteActionsTaskExecuter.java:70) at org.gradle.api.internal.tasks.execution.SkipUpToDateTaskExecuter.execute(SkipUpToDateTaskExecuter.java:63) at org.gradle.api.internal.tasks.execution.ResolveTaskOutputCachingStateExecuter.execute(ResolveTaskOutputCachingStateExecuter.java:54) at org.gradle.api.internal.tasks.execution.ValidatingTaskExecuter.execute(ValidatingTaskExecuter.java:58) at org.gradle.api.internal.tasks.execution.SkipEmptySourceFilesTaskExecuter.execute(SkipEmptySourceFilesTaskExecuter.java:88) at org.gradle.api.internal.tasks.execution.ResolveTaskArtifactStateTaskExecuter.execute(ResolveTaskArtifactStateTaskExecuter.java:52) at org.gradle.api.internal.tasks.execution.SkipTaskWithNoActionsExecuter.execute(SkipTaskWithNoActionsExecuter.java:52) at org.gradle.api.internal.tasks.execution.SkipOnlyIfTaskExecuter.execute(SkipOnlyIfTaskExecuter.java:54) at org.gradle.api.internal.tasks.execution.ExecuteAtMostOnceTaskExecuter.execute(ExecuteAtMostOnceTaskExecuter.java:43) at org.gradle.api.internal.tasks.execution.CatchExceptionTaskExecuter.execute(CatchExceptionTaskExecuter.java:34) at org.gradle.execution.taskgraph.DefaultTaskGraphExecuter$EventFiringTaskWorker$1.run(DefaultTaskGraphExecuter.java:248) at org.gradle.internal.progress.DefaultBuildOperationExecutor$RunnableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:336) at org.gradle.internal.progress.DefaultBuildOperationExecutor$RunnableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:328) at org.gradle.internal.progress.DefaultBuildOperationExecutor.execute(DefaultBuildOperationExecutor.java:197) at org.gradle.internal.progress.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:107) at org.gradle.execution.taskgraph.DefaultTaskGraphExecuter$EventFiringTaskWorker.execute(DefaultTaskGraphExecuter.java:241) at org.gradle.execution.taskgraph.DefaultTaskGraphExecuter$EventFiringTaskWorker.execute(DefaultTaskGraphExecuter.java:230) at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor$TaskExecutorWorker.processTask(DefaultTaskPlanExecutor.java:124) at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor$TaskExecutorWorker.access$200(DefaultTaskPlanExecutor.java:80) at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor$TaskExecutorWorker$1.execute(DefaultTaskPlanExecutor.java:105) at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor$TaskExecutorWorker$1.execute(DefaultTaskPlanExecutor.java:99) at org.gradle.execution.taskgraph.DefaultTaskExecutionPlan.execute(DefaultTaskExecutionPlan.java:625) at org.gradle.execution.taskgraph.DefaultTaskExecutionPlan.executeWithTask(DefaultTaskExecutionPlan.java:580) at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor$TaskExecutorWorker.run(DefaultTaskPlanExecutor.java:99) at org.gradle.internal.concurrent.ExecutorPolicy$CatchAndRecordFailures.onExecute(ExecutorPolicy.java:63) at org.gradle.internal.concurrent.ManagedExecutorImpl$1.run(ManagedExecutorImpl.java:46) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) at org.gradle.internal.concurrent.ThreadFactoryImpl$ManagedThreadRunnable.run(ThreadFactoryImpl.java:55) at java.lang.Thread.run(Thread.java:748) Caused by: java.util.concurrent.ExecutionException: java.util.concurrent.ExecutionException: com.android.tools.aapt2.Aapt2Exception: AAPT2 error: check logs for details at com.google.common.util.concurrent.AbstractFuture.getDoneValue(AbstractFuture.java:503) at com.google.common.util.concurrent.AbstractFuture.get(AbstractFuture.java:482) at com.google.common.util.concurrent.AbstractFuture$TrustedFuture.get(AbstractFuture.java:79) at com.android.builder.core.AndroidBuilder.processResources(AndroidBuilder.java:794) ... 48 more Caused by: java.util.concurrent.ExecutionException: com.android.tools.aapt2.Aapt2Exception: AAPT2 error: check logs for details at com.google.common.util.concurrent.AbstractFuture.getDoneValue(AbstractFuture.java:503) at com.google.common.util.concurrent.AbstractFuture.get(AbstractFuture.java:462) at com.google.common.util.concurrent.AbstractFuture$TrustedFuture.get(AbstractFuture.java:79) at com.android.builder.internal.aapt.v2.QueueableAapt2.lambda$makeValidatedPackage$1(QueueableAapt2.java:179) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) ... 1 more Caused by: com.android.tools.aapt2.Aapt2Exception: AAPT2 error: check logs for details at com.android.builder.png.AaptProcess$NotifierProcessOutput.handleOutput(AaptProcess.java:463) at com.android.builder.png.AaptProcess$NotifierProcessOutput.err(AaptProcess.java:415) at com.android.builder.png.AaptProcess$ProcessOutputFacade.err(AaptProcess.java:332) at com.android.utils.GrabProcessOutput$1.run(GrabProcessOutput.java:104) FAILED 25 actionable tasks: 1 executed, 24 up-to-date FAILURE: Build failed with an exception. * What went wrong: Execution failed for task ':app:processDebugResources'. > Failed to execute aapt * Try: Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. * Get more help at https://help.gradle.org BUILD FAILED in 45s cmd: Command failed with exit code 1 Error output: C:\Users\alan.grixti\.gradle\caches\transforms-1\files-1.1\appcompat-v7-28.0.0.aar\781a7646a099cfab576de3a8299207af\res\values-v28\values-v28.xml:9:5-12:13: AAPT: error: resource android:attr/dialogCornerRadius not found. C:\Development\IntercomTest\platforms\android\app\build\intermediates\incremental\mergeDebugResources\merged.dir\values-v28\values-v28.xml:11: AAPT: error: resource android:attr/dialogCornerRadius not found. C:\Users\alan.grixti\.gradle\caches\transforms-1\files-1.1\appcompat-v7-28.0.0.aar\781a7646a099cfab576de3a8299207af\res\values\values.xml:1304:5-69: AAPT: error: resource android:attr/fontVariationSettings not found. C:\Users\alan.grixti\.gradle\caches\transforms-1\files-1.1\appcompat-v7-28.0.0.aar\781a7646a099cfab576de3a8299207af\res\values\values.xml:1304:5-69: AAPT: error: resource android:attr/ttcIndex not found. C:\Development\IntercomTest\platforms\android\app\build\intermediates\incremental\mergeDebugResources\merged.dir\values-v28\values-v28.xml:7: error: resource android:attr/dialogCornerRadius not found. C:\Development\IntercomTest\platforms\android\app\build\intermediates\incremental\mergeDebugResources\merged.dir\values-v28\values-v28.xml:11: error: resource android:attr/dialogCornerRadius not found. C:\Development\IntercomTest\platforms\android\app\build\intermediates\incremental\mergeDebugResources\merged.dir\values\values.xml:644: error: resource android:attr/fontVariationSettings not found. C:\Development\IntercomTest\platforms\android\app\build\intermediates\incremental\mergeDebugResources\merged.dir\values\values.xml:644: error: resource android:attr/ttcIndex not found. error: failed linking references. Failed to execute aapt com.android.ide.common.process.ProcessException: Failed to execute aapt at com.android.builder.core.AndroidBuilder.processResources(AndroidBuilder.java:796) at com.android.build.gradle.tasks.ProcessAndroidResources.invokeAaptForSplit(ProcessAndroidResources.java:551) at com.android.build.gradle.tasks.ProcessAndroidResources.doFullTaskAction(ProcessAndroidResources.java:285) at com.android.build.gradle.internal.tasks.IncrementalTask.taskAction(IncrementalTask.java:109) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.gradle.internal.reflect.JavaMethod.invoke(JavaMethod.java:73) at org.gradle.api.internal.project.taskfactory.DefaultTaskClassInfoStore$IncrementalTaskAction.doExecute(DefaultTaskClassInfoStore.java:173) at org.gradle.api.internal.project.taskfactory.DefaultTaskClassInfoStore$StandardTaskAction.execute(DefaultTaskClassInfoStore.java:134) at org.gradle.api.internal.project.taskfactory.DefaultTaskClassInfoStore$StandardTaskAction.execute(DefaultTaskClassInfoStore.java:121) at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter$1.run(ExecuteActionsTaskExecuter.java:122) at org.gradle.internal.progress.DefaultBuildOperationExecutor$RunnableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:336) at org.gradle.internal.progress.DefaultBuildOperationExecutor$RunnableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:328) at org.gradle.internal.progress.DefaultBuildOperationExecutor.execute(DefaultBuildOperationExecutor.java:197) at org.gradle.internal.progress.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:107) at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeAction(ExecuteActionsTaskExecuter.java:111) at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeActions(ExecuteActionsTaskExecuter.java:92) at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.execute(ExecuteActionsTaskExecuter.java:70) at org.gradle.api.internal.tasks.execution.SkipUpToDateTaskExecuter.execute(SkipUpToDateTaskExecuter.java:63) at org.gradle.api.internal.tasks.execution.ResolveTaskOutputCachingStateExecuter.execute(ResolveTaskOutputCachingStateExecuter.java:54) at org.gradle.api.internal.tasks.execution.ValidatingTaskExecuter.execute(ValidatingTaskExecuter.java:58) at org.gradle.api.internal.tasks.execution.SkipEmptySourceFilesTaskExecuter.execute(SkipEmptySourceFilesTaskExecuter.java:88) at org.gradle.api.internal.tasks.execution.ResolveTaskArtifactStateTaskExecuter.execute(ResolveTaskArtifactStateTaskExecuter.java:52) at org.gradle.api.internal.tasks.execution.SkipTaskWithNoActionsExecuter.execute(SkipTaskWithNoActionsExecuter.java:52) at org.gradle.api.internal.tasks.execution.SkipOnlyIfTaskExecuter.execute(SkipOnlyIfTaskExecuter.java:54) at org.gradle.api.internal.tasks.execution.ExecuteAtMostOnceTaskExecuter.execute(ExecuteAtMostOnceTaskExecuter.java:43) at org.gradle.api.internal.tasks.execution.CatchExceptionTaskExecuter.execute(CatchExceptionTaskExecuter.java:34) at org.gradle.execution.taskgraph.DefaultTaskGraphExecuter$EventFiringTaskWorker$1.run(DefaultTaskGraphExecuter.java:248) at org.gradle.internal.progress.DefaultBuildOperationExecutor$RunnableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:336) at org.gradle.internal.progress.DefaultBuildOperationExecutor$RunnableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:328) at org.gradle.internal.progress.DefaultBuildOperationExecutor.execute(DefaultBuildOperationExecutor.java:197) at org.gradle.internal.progress.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:107) at org.gradle.execution.taskgraph.DefaultTaskGraphExecuter$EventFiringTaskWorker.execute(DefaultTaskGraphExecuter.java:241) at org.gradle.execution.taskgraph.DefaultTaskGraphExecuter$EventFiringTaskWorker.execute(DefaultTaskGraphExecuter.java:230) at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor$TaskExecutorWorker.processTask(DefaultTaskPlanExecutor.java:124) at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor$TaskExecutorWorker.access$200(DefaultTaskPlanExecutor.java:80) at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor$TaskExecutorWorker$1.execute(DefaultTaskPlanExecutor.java:105) at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor$TaskExecutorWorker$1.execute(DefaultTaskPlanExecutor.java:99) at org.gradle.execution.taskgraph.DefaultTaskExecutionPlan.execute(DefaultTaskExecutionPlan.java:625) at org.gradle.execution.taskgraph.DefaultTaskExecutionPlan.executeWithTask(DefaultTaskExecutionPlan.java:580) at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor$TaskExecutorWorker.run(DefaultTaskPlanExecutor.java:99) at org.gradle.internal.concurrent.ExecutorPolicy$CatchAndRecordFailures.onExecute(ExecutorPolicy.java:63) at org.gradle.internal.concurrent.ManagedExecutorImpl$1.run(ManagedExecutorImpl.java:46) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) at org.gradle.internal.concurrent.ThreadFactoryImpl$ManagedThreadRunnable.run(ThreadFactoryImpl.java:55) at java.lang.Thread.run(Thread.java:748) Caused by: java.util.concurrent.ExecutionException: java.util.concurrent.ExecutionException: com.android.tools.aapt2.Aapt2Exception: AAPT2 error: check logs for details at com.google.common.util.concurrent.AbstractFuture.getDoneValue(AbstractFuture.java:503) at com.google.common.util.concurrent.AbstractFuture.get(AbstractFuture.java:482) at com.google.common.util.concurrent.AbstractFuture$TrustedFuture.get(AbstractFuture.java:79) at com.android.builder.core.AndroidBuilder.processResources(AndroidBuilder.java:794) ... 48 more Caused by: java.util.concurrent.ExecutionException: com.android.tools.aapt2.Aapt2Exception: AAPT2 error: check logs for details at com.google.common.util.concurrent.AbstractFuture.getDoneValue(AbstractFuture.java:503) at com.google.common.util.concurrent.AbstractFuture.get(AbstractFuture.java:462) at com.google.common.util.concurrent.AbstractFuture$TrustedFuture.get(AbstractFuture.java:79) at com.android.builder.internal.aapt.v2.QueueableAapt2.lambda$makeValidatedPackage$1(QueueableAapt2.java:179) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) ... 1 more Caused by: com.android.tools.aapt2.Aapt2Exception: AAPT2 error: check logs for details at com.android.builder.png.AaptProcess$NotifierProcessOutput.handleOutput(AaptProcess.java:463) at com.android.builder.png.AaptProcess$NotifierProcessOutput.err(AaptProcess.java:415) at com.android.builder.png.AaptProcess$ProcessOutputFacade.err(AaptProcess.java:332) at com.android.utils.GrabProcessOutput$1.run(GrabProcessOutput.java:104) FAILURE: Build failed with an exception. * What went wrong: Execution failed for task ':app:processDebugResources'. > Failed to execute aapt * Try: Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. * Get more help at https://help.gradle.org BUILD FAILED in 45s

1 Answers1

3

The actual error causing the build failure is this:

AAPT: error: resource android:attr/dialogCornerRadius not found.

As outlined in this answer, the reason for this error is when the compileSdkVersion does not match the Android Support Library version.

Since cordova-android@7.1.0, the compileSdkVersion has been set to 27.

Therefore check your platforms/android/app/build.gradle and see if it contains some references to an earlier version of the Support Library, e.g.:

compile "com.android.support:appcompat-v7:26.+"

If so, then a plugin in your project is probably pinning that version and causing the conflict.

One potential solution is to use cordova-android-support-gradle-release to override the version of the Support Library specified by other plugins:

cordova plugin add cordova-android-support-gradle-release  --variable ANDROID_SUPPORT_VERSION=27.+
DaveAlden
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