Infinite calling 'callproc()' make memory error and dead

Infinite (but one call at a time by thread.lock) calling of 'cursor.callproc('procedure', args)'
keep failing with an error that
"<class 'mariadb.OperationalError'> Client run out of memory"
on windows python.

DB have no error.
if I re-run the python script, everything work fine again, but later few hours dead again.
And the same call/procedure on the MariaDB console, no problem.