Hey @clebercarvalhoRaise : I am getting this same “unexpected end of JSON input” error in a workflow that was previously working. I have spent 5+ hours debugging and cannot understand what the issue is. My guess is that SailPoint recently pushed a Workflow update and didn’t validate fully but my guess is as good as yours.
For reference, I opened a similar post here: Unable to use loop input or loop context in loop steps - Identity Security Cloud (ISC) / ISC Discussion and Questions - SailPoint Developer Community
I think the bug lies exclusively with passing loop input and loop context variables to inner loop HTTP operations, as I am still able to call Get Identity inside the loop, for example.