Bamboo fails to create Specs code when "Build warnings parser" task is present.

2020-04-09 11:37:27,229 ERROR [http-nio-8085-exec-6] [ViewPlanSpecs] 
java.lang.NullPointerException
	at com.atlassian.bamboo.task.export.AbstractRepositoryAwareTaskExporter.getNonDefaultRepositoryRef(AbstractRepositoryAwareTaskExporter.java:71)
	at com.atlassian.bamboo.warnings.export.WarningsTaskExporter.toSpecsEntity(WarningsTaskExporter.java:120)
	at com.atlassian.bamboo.task.export.TaskDefinitionExporter.toSpecsEntity(TaskDefinitionExporter.java:59)
	at com.atlassian.bamboo.configuration.external.helpers.TaskDefinitionExportHelper.toSpecsEntity(TaskDefinitionExportHelper.java:63)
	at com.atlassian.bamboo.configuration.external.PlanConfigExportServiceImpl.lambda$null$15(PlanConfigExportServiceImpl.java:307)
	at java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:193)
	at java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:175)
	at java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1382)
	at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:482)
	at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:472)
	at java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150)
	at java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173)
	at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
	at java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:485)
	at com.atlassian.bamboo.configuration.external.PlanConfigExportServiceImpl.lambda$generateJobs$24(PlanConfigExportServiceImpl.java:308)
	at java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:193)
	at java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1556)
	at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:482)
	at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:472)
	at java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:708)
	at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
	at java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:566)
	at com.atlassian.bamboo.configuration.external.PlanConfigExportServiceImpl.generateJobs(PlanConfigExportServiceImpl.java:351)
	at com.atlassian.bamboo.configuration.external.PlanConfigExportServiceImpl.lambda$generateStages$13(PlanConfigExportServiceImpl.java:287)
	at java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:193)
	at java.util.Collections$2.tryAdvance(Collections.java:4719)
	at java.util.Collections$2.forEachRemaining(Collections.java:4727)
	at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:482)
	at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:472)
	at java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:708)
	at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
	at java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:566)
	at com.atlassian.bamboo.configuration.external.PlanConfigExportServiceImpl.generateStages(PlanConfigExportServiceImpl.java:291)
	at com.atlassian.bamboo.configuration.external.PlanConfigExportServiceImpl.generateTopLevelPlanProperties(PlanConfigExportServiceImpl.java:250)
	at com.atlassian.bamboo.configuration.external.PlanConfigExportServiceImpl.exportPlanToSpecs(PlanConfigExportServiceImpl.java:142)
	at com.atlassian.bamboo.ww2.actions.build.admin.config.ViewPlanSpecs.code(ViewPlanSpecs.java:51)
	at com.atlassian.bamboo.ww2.actions.build.admin.config.ViewPlanSpecs.input(ViewPlanSpecs.java:29)
	(...)