App Not Archiving After Update

Hi! A couple of months ago my app was archiving just fine. Since an xcode update the build fails. Here is what shows at the end of the log. Thank you in advance for any help!

Run custom shell script 'Run Script'

Failed to package [project folder]

Command PhaseScriptExecution failed with a nonzero exit code

App Not Archiving After Update
 
 
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