Function execuation failure: Roslyn PromiseNotToEnqueue

[sjwaight]

I have a shared Functions App environment with about 5 lightly utilised Function Apps. Today I received the following error during the execution of one of the Apps. The run.csx compiles fine with no errors. There are 10 instances of this error for the same execution.

2016-12-09T04:41:02.691 Function started (Id=2646f24f-2c28-48fa-bc6d-f20059419264)
2016-12-09T04:41:03.967 Function completed (Failure, Id=2646f24f-2c28-48fa-bc6d-f20059419264)
2016-12-09T04:41:06.143 Exception while executing function: Functions.CustomerPaymentRequestProcessorV2. Microsoft.CodeAnalysis: Cannot enqueue data after PromiseNotToEnqueue.

Following a change / re-save the Function worked as expected.

[fabiocav]

@sjwaight, thank you for reporting this!

We have an issue tracking this problem in the runtime repository here and have been working with the Roslyn team to address it.

I'll close this as a duplicate, but please feel free to comment on the issue above if you encounter this again.

Thank you!