Did you have any loops in the flow?
I recently had a problem with nested objects in a state machine loop that made the node-red flow stop after a while, because it went over the limit for message-size.
My guess is that in a Zero, and with its lower memory capacity, if you're handling big messages it may eventually cause problems.
Copyright OpenJS Foundation and Node-RED contributors. All rights reserved. The OpenJS Foundation has registered trademarks and uses trademarks. For a list of trademarks of the OpenJS Foundation, please see our Trademark Policy and Trademark List. Trademarks and logos not indicated on the list of OpenJS Foundation trademarks are trademarks™ or registered® trademarks of their respective holders. Use of them does not imply any affiliation with or endorsement by them.
The OpenJS Foundation | Terms of Use | Privacy Policy | OpenJS Foundation Bylaws | Trademark Policy | Trademark List | Cookie Policy