Assigning Javascript Error (e.g. NativeError) to action output causes serialization error and the flow to hang - Known Error

Assigning Javascript Error (e.g. NativeError) to action output causes serialization error and the flow to hang Description A serialization error occurs when a script output cannot be serialized. String outputs should be treated as strings.

Steps to Reproduce

Install attached update set sys_remote_update_set_a02cee5bdbb91010542ae8cd13961901.xml Execute CSTASK081198 Flow using the Test button

You'll see the execution is stuck at the Timer and the flow never completes

error updating the flow context: com.snc.process_flow.exception.ProcessAutomationException: error updating the flow context: com.snc.process_flow.engine.PFContext.updateContext(PFContext.java:464) com.snc.process_flow.engine.PFContext.savePlan(PFContext.java:196) com.snc.process_flow.engine.GlideProcessAutomation.persistPlan(GlideProcessAutomation.java:669) com.snc.process_flow.engine.ProcessAutomation.run(ProcessAutomation.java:71) com.snc.process_flow.engine.GlideProcessAutomation.runSync(GlideProcessAutomation.java:131) com.snc.process_flow.engine.GlideProcessAutomation.lambda$runAsUserSync$1(GlideProcessAutomation.java:219) com.snc.process_flow.engine.GlidePFSession.runPlanAsUserSession(GlidePFSession.java:26) com.snc.process_flow.engine.GlideProcessAutomation.runAsUserSync(GlideProcessAutomation.java:211) com.snc.process_flow.engine.GlideProcessAutomation.messageFlow(GlideProcessAutomation.java:248) com.snc.process_flow.engine.GlideProcessAutomation._start(GlideProcessAutomation.java:410) com.snc.process_flow.engine.GlideProcessAutomation.access$400(GlideProcessAutomation.java:84) com.snc.process_flow.engine.GlideProcessAutomation$StartBuilder.start(GlideProcessAutomation.java:1015) com.glide.flow_trigger.engine.TestButtonTriggerRunner.run(TestButtonTriggerRunner.java:216) com.glide.flow_trigger.engine.TestButtonTriggerRunner.test(TestButtonTriggerRunner.java:220) com.glide.flow.providers.FlowGlideProvider.testFlow(FlowGlideProvider.java:1014) com.glide.flow_design.rest.FlowService.testRunFlow(FlowService.java:573)

Workaround Ensure that the script assigns string type script outputs to strings. For example:

(function execute(inputs, outputs) { try { throw Error("something bad"); } catch(e) { outputs.output_str = e; } })(inputs, outputs);

The line:

outputs.output_str = e;

Should be:

outputs.output_str = e.message;

In other cases, you may need to do toString() or append an empty string (string + '').