Hi, I was about to confirm my sales order but whenever I clicked the confirm button, it always shows this error. Any suggestion?

RPC_ERROR
Odoo Server Error
Traceback (most recent call last):
File "/home/odoo/src/odoo/16.0/odoo/http\.py",\ line\ 1583,\ in\ _serve_db
\ \ \ \ return\ service_model\.retrying\(self\._serve_ir_http,\ self\.env\)
\ \ File\ "/home/odoo/src/odoo/16\.0/odoo/service/model\.py",\ line\ 134,\ in\ retrying
\ \ \ \ result\ =\ func\(\)
\ \ File\ "/home/odoo/src/odoo/16\.0/odoo/http\.py",\ line\ 1610,\ in\ _serve_ir_http
\ \ \ \ response\ =\ self\.dispatcher\.dispatch\(rule\.endpoint,\ args\)
\ \ File\ "/home/odoo/src/odoo/16\.0/odoo/http\.py",\ line\ 1807,\ in\ dispatch
\ \ \ \ result\ =\ self\.request\.registry\['ir\.http'\]\._dispatch\(endpoint\)
\ \ File\ "/home/odoo/src/odoo/16\.0/odoo/addons/base/models/ir_http\.py",\ line\ 154,\ in\ _dispatch
\ \ \ \ result\ =\ endpoint\(\*\*request\.params\)
\ \ File\ "/home/odoo/src/odoo/16\.0/odoo/http\.py",\ line\ 696,\ in\ route_wrapper
\ \ \ \ result\ =\ endpoint\(self,\ \*args,\ \*\*params_ok\)
\ \ File\ "/home/odoo/src/odoo/16\.0/addons/web/controllers/dataset\.py",\ line\ 46,\ in\ call_button
\ \ \ \ action\ =\ self\._call_kw\(model,\ method,\ args,\ kwargs\)
\ \ File\ "/home/odoo/src/odoo/16\.0/addons/web/controllers/dataset\.py",\ line\ 33,\ in\ _call_kw
\ \ \ \ return\ call_kw\(request\.env\[model\],\ method,\ args,\ kwargs\)
\ \ File\ "/home/odoo/src/odoo/16\.0/odoo/api\.py",\ line\ 461,\ in\ call_kw
\ \ \ \ result\ =\ _call_kw_multi\(method,\ model,\ args,\ kwargs\)
\ \ File\ "/home/odoo/src/odoo/16\.0/odoo/api\.py",\ line\ 448,\ in\ _call_kw_multi
\ \ \ \ result\ =\ method\(recs,\ \*args,\ \*\*kwargs\)
\ \ File\ "/home/odoo/src/odoo/16\.0/addons/mrp/models/mrp_production\.py",\ line\ 1263,\ in\ action_confirm
\ \ \ \ production\.workorder_ids\._action_confirm\(\)
\ \ File\ "/home/odoo/src/enterprise/16\.0/mrp_workorder/models/mrp_workorder\.py",\ line\ 568,\ in\ _action_confirm
\ \ \ \ res\ =\ super\(\)\._action_confirm\(\)
\ \ File\ "/home/odoo/src/odoo/16\.0/addons/mrp/models/mrp_workorder\.py",\ line\ 499,\ in\ _action_confirm
\ \ \ \ production\._link_workorders_and_moves\(\)
\ \ File\ "/home/odoo/src/odoo/16\.0/addons/mrp/models/mrp_production\.py",\ line\ 1296,\ in\ _link_workorders_and_moves
\ \ \ \ 'workorder_id':\ workorder_per_operation\[move\.operation_id\]\.id
KeyError:\ mrp\.routing\.workcenter\(1,\)

The\ above\ server\ error\ caused\ the\ following\ client\ error:
RPC_ERROR:\ Odoo\ Server\ Error
\ \ \ \ RPCError@https://edu\-elco\.odoo\.com/web/assets/569\-05bb5a0/web\.assets_backend\.min\.js:973:279
\ \ \ \ makeErrorFromResponse@https://edu\-elco\.odoo\.com/web/assets/569\-05bb5a0/web\.assets_backend\.min\.js:977:175
\ \ \ \ @https://edu-elco.odoo.com/web/assets/569-05bb5a0/web.assets_backend.min.js:985:34