Smart Service - Move to Collab

Dear Team, I am new comer to Appian have background of IBM BPM, Can you please guide where to find  inner exception details (log for this error) of a smart service ( Move to Collab). It is giving error 

com.appiancorp.suiteapi.process.exceptions.SmartServiceException: java.lang.Exception: Invalid File Path: /webattachments/path/foldername//info@alwaha-qatar.com/qid20220327080031286QID_&_PP.pdf

we are using to move files from file server to appian mount path but it is completed sometimes & gives above error some times.

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