Cannnot persist changes when leaving multi-user editing

I started a UE5 project with my partner, and we used multi-user editing plugin. Everything went well at the beginning, I could see what he is editing and the changes were completely saved in the session. But when we try to leave the session, we pressed the ‘persist changes’ button then a notification came out saying persist changes faliure. At first we used multi-user to do source code control, then we gave p4v a try but it was still there. By now, we are stuck here.Can anyone help me?

I have solved this problem. I named my project with Chinese characters and my project’s root folder was also named in Chinese, which had made p4v confused while reading my files. Then I renamed my project and its root folder in English and persist changes button went well on both my PC and my partners. Hope this will be helpful, if anyone else has the same problem as we did.