My Time Management - Grid view issue in Aurena

Hello  All

 I have an issue in Aurena for select people :

Human Capital Management > My Self-Service > My Time and Attendance > My Time Registration - Grid View

While trying to navigate  to previous  or next week I get a “Server Error” for /ifsapplications/projection/v1/TimeRegistrationEmployeeHandling.svc/LoadEmpData  

Drilling in, it’s telling me 

{"error":{"code":"ODATA_PROVIDER_ERROR","message":"An internal server error occurred. Contact administrator.","details":[{"code":"HTTP_METHOD_NOT_ALLOWED","message":"HTTP method 'GET' not allowed for this resource."}]}}

Could it be  a permission error (this user has the same permissions as the rest of us)? If you encountered this before, how did you fix it?

Many thanks,

Paul.