Unknown column 'ctx.path' in 'field list'

SELECT ctx.path, rc.capability, rc.permission FROM mdl_context ctx JOIN mdl_role_capabilities rc ON rc.contextid=ctx.id WHERE rc.roleid = 6 AND ctx.contextlevel <= 50 ORDER BY ctx.depth, ctx.path

• line 686 of lib/dmllib.php: call to debugging()
• line 256 of lib/accesslib.php: call to get_recordset_sql()
• line 1533 of lib/accesslib.php: call to get_role_access()
• line 675 of lib/setup.php: call to load_all_capabilities()
• line 22 of config.php: call to require_once()
• line 8 of lib/javascript-mod.php: call to include()