We were using Exalate v. 5.0.5 (Core v. 5.0.63) for Jira to ServiceNow Integration, We are facing error in script āUnable to load FastStringServiceā after upgrading the exalate version on Jira side to latest version of exalate.
We would recommend for this particular incident to raise a support ticket for us to help you with this error. It would be helpful when you create it to attach the support zip file from Jira side. More instructions on how to do it here: