Several days ago i update Odoo 15 and this thing suddenly happen on Purchase module.
TypeError: scope.messageView.message.originThread.getMemberName is not a function
at QWeb.eval (eval at _compile (http://192.168.77.102:8069/web/assets/237-1210af7/web.assets_common.min.js:1026:178), :195:75)
at QWeb.fn (http://192.168.77.102:8069/web/assets/237-1210af7/web.assets_common.min.js:1008:173)
at QWeb.render (http://192.168.77.102:8069/web/assets/237-1210af7/web.assets_common.min.js:1015:20)
at MessagingClass.__render (http://192.168.77.102:8069/web/assets/237-1210af7/web.assets_common.min.js:1344:33)
at MessagingClass.component.__render (http://192.168.77.102:8069/web/assets/272-8e68f56/web.assets_backend.min.js:6200:10)
at MessagingClass.__prepareAndRender (http://192.168.77.102:8069/web/assets/237-1210af7/web.assets_common.min.js:1342:29)
I try to uninstall the module and install it back and run smoothly but sadly i lose all the purchasing data.