Attachment Ids not copying for recurring tasks for weeks 3, 4 & 5

Symptoms                                                                                                  

The issue does not become apparent until Week 3 becomes the "Current Week" or "Next Week". When a User attempts to download any task attachment for that week they receive the following error message:

{"Message":"An error has occurred.","ExceptionMessage":"Value cannot be null.\r\nParameter name: path2","ExceptionType":"System.ArgumentNullException","StackTrace":"...

Additionally, when a User attempts to print any Shift Plan for that week, Fewzion fails to respond and the following error is logged on the Developer Tools console:

http://myfewzionsintance/Report/PrintShiftPlanReport?dxrep fake=&reportID=ShiftPlanReport
Failed to load resource: the server responded with a status of 500 (Internal Server Error)

Resolution                                                                                                  

This issue was fix in Fewzion v13.8.21, to upgrade to the current version of Fewzion please contact Fewzion support.