what lutz said the first issue  data structure of wrong type  could happen due to an admin messing around with their low level preg pol files  or perhaps due to backwards incompatible change to a policy schema  don t do this the seccond issue  malformed json strings  will happen all the time when admins forget a curly brace  i do not think it is necessary to tell the admin both at once somehow  you corrupted your  pol file  and also you forgot a curly brace 