解决打包错误Expected a name but was STRING at line 1 column 99 path $[0].apkInfo.versionName

打release包的时候，出现这个玩意，但debug直接跑apk又没问题。

Caused by: com.google.gson.JsonSyntaxException: java.lang.IllegalStateException: Expected a name but was STRING at line 1 column 99 path $[0].apkInfo.versionName
    at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory$Adapter.read(ReflectiveTypeAdapterFactory.java:187)
    at com.google.gson.internal.bind.TypeAdapterRuntimeTypeWrapper.read(TypeAdapterRuntimeTypeWrapper.java:40)
    at com.google.gson.internal.bind.CollectionTypeAdapterFactory$Adapter.read(CollectionTypeAdapterFactory.java:81)
    at com.google.gson.internal.bind.CollectionTypeAdapterFactory$Adapter.read(CollectionTypeAdapterFactory.java:60)
    at com.google.gson.Gson.fromJson(Gson.java:805)
    at com.google.gson.Gson.fromJson(Gson.java:770)
    at com.android.build.gradle.internal.scope.BuildOutputs.load(BuildOutputs.java:234)
    at com.android.build.gradle.internal.scope.BuildOutputs.load(BuildOutputs.java:184)
    at com.android.build.gradle.internal.scope.BuildOutputs.load(BuildOutputs.java:140)
    at com.android.build.gradle.internal.ide.BuildOutputssupplier.lambda$get$1(BuildOutputssupplier.java:54)
    at com.google.common.collect.ImmutableList.forEach(ImmutableList.java:397)
    at com.android.build.gradle.internal.ide.BuildOutputssupplier.get(BuildOutputssupplier.java:49)
    at com.android.build.gradle.internal.ide.BuildOutputssupplier.get(BuildOutputssupplier.java:34)
    at com.android.build.gradle.internal.ide.AndroidArtifactImpl.getoutputs(AndroidArtifactImpl.java:135)
    at com.android.build.gradle.internal.LintGradleProject$AppGradleProject.<init>(LintGradleProject.java:206)
    at com.android.build.gradle.internal.LintGradleProject$AppGradleProject.<init>(LintGradleProject.java:192)
    at com.android.build.gradle.internal.LintGradleProject$ProjectSearch.getProject(LintGradleProject.java:948)
    at com.android.build.gradle.internal.LintGradleProject$ProjectSearch.getProject(LintGradleProject.java:784)
    at com.android.build.gradle.internal.LintGradleClient.createlintrequest(LintGradleClient.java:182)
    at com.android.tools.lint.LintCliClient.run(LintCliClient.java:149)
    at com.android.build.gradle.internal.LintGradleClient.run(LintGradleClient.java:197)
    at com.android.build.gradle.tasks.LintBaseTask.runLint(LintBaseTask.java:198)
    at com.android.build.gradle.tasks.LintPerVariantTask.lintSingleVariant(LintPerVariantTask.java:53)
    at com.android.build.gradle.tasks.LintPerVariantTask.lint(LintPerVariantTask.java:45)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at org.gradle.internal.reflect.JavaMethod.invoke(JavaMethod.java:73)
    at org.gradle.api.internal.project.taskfactory.DefaultTaskClassInfoStore$StandardTaskAction.doExecute(DefaultTaskClassInfoStore.java:141)
    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.AbstractTask$TaskActionWrapper.execute(AbstractTask.java:731)
    at org.gradle.api.internal.AbstractTask$TaskActionWrapper.execute(AbstractTask.java:705)
    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)
    ... 105 more
Caused by: java.lang.IllegalStateException: Expected a name but was STRING at line 1 column 99 path $[0].apkInfo.versionName
    at com.google.gson.stream.JsonReader.nextName(JsonReader.java:799)
    at com.android.build.gradle.internal.scope.BuildOutputs$ApkInfoAdapter.read(BuildOutputs.java:278)
    at com.android.build.gradle.internal.scope.BuildOutputs$ApkInfoAdapter.read(BuildOutputs.java:248)
    at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory$1.read(ReflectiveTypeAdapterFactory.java:95)
    at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory$Adapter.read(ReflectiveTypeAdapterFactory.java:183)
    ... 145 more

解决办法很简单，删除release文件夹下面的output.json文件再重新编译即可。