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java.util.ConcurrentModificationException at java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1545) at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:512) at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:502) at java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) at java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:418) at org.meridor.perspective.openstack.ListProjectsOperation.getFetchMap(ListProjectsOperation.java:82) at org.meridor.perspective.openstack.ListProjectsOperation.perform(ListProjectsOperation.java:59) at org.meridor.perspective.worker.operation.impl.OperationProcessorImpl.consumeImpl(OperationProcessorImpl.java:42) at org.meridor.perspective.worker.operation.impl.OperationProcessorImpl.consume(OperationProcessorImpl.java:32) at org.meridor.perspective.worker.fetcher.impl.ProjectsFetcher.fetch(ProjectsFetcher.java:66) at org.meridor.perspective.worker.fetcher.impl.BaseFetcher.lambda$null$14(BaseFetcher.java:54)