BUG: GrailsGradlePlugin CRASHES if grails-app folder does not exist.

[codeconsole]

grails-app folder should be optional.

 ./gradlew clean bootRun --stacktrace

Caused by: org.gradle.api.internal.plugins.PluginApplicationException: Failed to apply plugin 'org.grails.grails-web'.
        at org.gradle.api.internal.plugins.DefaultPluginManager.doApply(DefaultPluginManager.java:173)
        at org.gradle.api.internal.plugins.DefaultPluginManager.apply(DefaultPluginManager.java:146)
        at org.gradle.plugin.use.internal.DefaultPluginRequestApplicator.lambda$applyLegacyPlugin$2(DefaultPluginRequestApplicator.java:160)
        at org.gradle.plugin.use.internal.DefaultPluginRequestApplicator.applyPlugin(DefaultPluginRequestApplicator.java:201)
        ... 164 more
Caused by: org.gradle.internal.operations.BuildOperationInvocationException: /Users/sheiberg/Documents/workspace/sitemesh3/sitemesh-examples-gsp/grails-app
        at org.gradle.internal.operations.DefaultBuildOperationRunner.throwAsBuildOperationInvocationException(DefaultBuildOperationRunner.java:192)
        at org.gradle.internal.operations.DefaultBuildOperationRunner.access$100(DefaultBuildOperationRunner.java:24)
        at org.gradle.internal.operations.DefaultBuildOperationRunner$2.execute(DefaultBuildOperationRunner.java:75)
        at org.gradle.internal.operations.DefaultBuildOperationRunner$2.execute(DefaultBuildOperationRunner.java:59)
        at org.gradle.internal.operations.DefaultBuildOperationRunner.execute(DefaultBuildOperationRunner.java:157)
        at org.gradle.internal.operations.DefaultBuildOperationRunner.execute(DefaultBuildOperationRunner.java:59)
        at org.gradle.internal.operations.DefaultBuildOperationRunner.run(DefaultBuildOperationRunner.java:47)
        at org.gradle.internal.operations.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:68)
        at org.gradle.api.internal.plugins.DefaultPluginManager.lambda$doApply$0(DefaultPluginManager.java:167)
        at org.gradle.configuration.internal.DefaultUserCodeApplicationContext.apply(DefaultUserCodeApplicationContext.java:44)
        at org.gradle.api.internal.plugins.DefaultPluginManager.doApply(DefaultPluginManager.java:166)
        ... 167 more
Caused by: java.io.FileNotFoundException: /Users/sheiberg/Documents/workspace/sitemesh3/sitemesh-examples-gsp/grails-app
        at org.grails.gradle.plugin.core.GrailsGradlePlugin.resolveGrailsSourceDirs(GrailsGradlePlugin.groovy:358)

workaround is to have an empty grails-app folder, but that is kind of silly.