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startInteraction return null not return id tracing



Hi support team
I’m using newRelic v5.17.2 for android
When I register custom interaction
String startRequest = NewRelic.startInteraction(“action/name”); then I so this line code return null. I can not get traceId for this activity? any help for me?
thank you so much.
deeply inside method startInteraction I saw TraceMachine is null. I don’t know why :frowning:
the first run is OK but always return null for the second call


update: fixed on version: 5.21.3
close issue


Hey @v.thanhtd16 - thanks for letting us know this is no longer an issue for you in the newer version :smiley: