can anyone help with some WFA troubleshooting tips?

I recently upgraded WFA from 4.2 to 5.0. The workflows that worked fine at 4.2 no longer work at 5.2, with the following error in the create volume command:

'_x001C'_, hexadecimal value 0x1C, is an invalid character. Line 1, position 710. Location: Row '1' step 'Create volume'

Is there any help out there with tips on how to troubleshoot this? thanks in advance.