Update to SQL Server Management Studio V18.9.1 now SQL Prompt error

After updating to SSMS V18.9.1 Redgate throws this Error initially "Object reference not set to an instance of an object" than my coworker can't use SQL Prompt 10.6.12.20269
I sent the error report too

I sent the error report too

Comments
2021-06-04 11:39:51.205 -04:00 [Information] Logging level set to 'Information'