Error while update v7.1 to v9

[Mahmoud_Ghoneem]

sorry i was replying for that issue

Please Help me System down

Error While updating Please help me the system is down Executing erpnext.patches.v9_0.set_schedule_date_for_material_request_and_purchase_order in erp.riadco.com.eg (8d46e6cf4d0aa64e) Traceback (most recent call last): File “/usr/lib/python2.7/runpy.py”, line 162, in _run_module_as_main “main”, fname, loader, pkg_name) File “/usr/lib/python2.7/runpy.py”, line 72, in _run_code exec code in run_globals File “/home/frappe/frappe-bench/apps/frappe/frappe/utils/bench_helper.py”, line 94, in …