Code 500 while fetching data from Get-items-by-tag

An error appeared while fetching data form board that I can only access as a viewer (not editior):

{   "type" : "error",   "code" : "3.0018",   "context" : {     "boardId" : {       "value" : "uXjVJ6HI7yA="     }   },   "message" : "Internal error occurred",   "status" : 500 }

After obtaining access as a editor - this error is gone. Can it be related to the insufficient permissions?