when the user is trying to update the values of tags, it throws an error of "Invalid request"  in that case to resolve the issue follow the below setups:

Open Dev console --> query = 'SELECT Id, Name, XFILES__Tagging__c FROM XFILES__XFP_Object_Setup__c'

 double click on the XFILES__Tagging__c field where the changes needs to be changed-->  Need to remove the white spaces from mappedColumnName and check,