Shift Assignment Tool not Working

hi,

I am trying to bulk assign shift or shift schedule but it is not working

and there is no such issue in the console as well the screen freezes for a second and then no effect

Traceback with variables (most recent call last):
  File "apps/frappe/frappe/app.py", line 115, in application
    response = frappe.api.handle(request)
      request = <Request 'https://erp.floragroup.net/api/method/run_doc_method' [GET]>
      response = None
      rollback = True
      e = TypeError("run_doc_method() missing 1 required positional argument: 'method'")
  File "apps/frappe/frappe/api/__init__.py", line 50, in handle
    data = endpoint(**arguments)
      request = <Request 'https://erp.floragroup.net/api/method/run_doc_method' [GET]>
      endpoint = <function handle_rpc_call at 0x7f7b4cfd6b90>
      arguments = {'method': 'run_doc_method'}
  File "apps/frappe/frappe/api/v1.py", line 36, in handle_rpc_call
    return frappe.handler.handle()
      method = 'run_doc_method'
      frappe = <module 'frappe' from 'apps/frappe/frappe/__init__.py'>
  File "apps/frappe/frappe/handler.py", line 52, in handle
    data = execute_cmd(cmd)
      cmd = 'run_doc_method'
      data = None
  File "apps/frappe/frappe/handler.py", line 85, in execute_cmd
    return frappe.call(method, **frappe.form_dict)
      cmd = 'run_doc_method'
      from_async = False
      server_script = None
      method = <function run_doc_method at 0x7f7b4c8d0430>
  File "apps/frappe/frappe/__init__.py", line 1754, in call
    return fn(*args, **newargs)
      fn = <function run_doc_method at 0x7f7b4c8d0430>
      args = ()
      kwargs = {'cmd': 'run_doc_method'}
      newargs = {}
builtins.TypeError: run_doc_method() missing 1 required positional argument: 'method'