@Neo_Reeves
The error is due to the non-existence or incorrect reference to the "system" schema under your catalog. Check the correct catalog and schema names where the stored procedure run_job resides, and update the CALL statement accordingly.
CALL test_catalog.system.run_job("load_table")
Verify that the schema "system" truly exists in the catalog test_catalog

If "run_job" is a stored procedure or SQL function, be sure it exists under the correct catalog and schema name.
if you intended to execute a stored procedure or run a job, confirm that it is created in a schema you have access to and specify that schema instead of "system"