OFFICE_WEB_APP_BASE_URL dosen't work while using collabora

While I preview the docs file via collabora, the browser shows Unauthorized WOPI host,

though I have modified the seahub_settings.py and delete seahub_settings.py and restart seafile( I even reboot my serve). 【Of course, I also set up my collabora server.】

When I tracked the error through the F12 console, I found that although I have modified the seahub_settings.py, the browser will still download resource from https://collabora-online.seafile.com, I guess the modification of seahub_settings.py makes no effect.

PS:I noticed that someone posted a similar post, but the problem doesn’t seem to be solved.