Discourse Integration app don’t redirect me back to Nextcloud and don’t work

Nextcloud version (eg, 20.0.5) : 29.0.0
Operating system and version (eg, Ubuntu 20.04) : Ubuntu 20.04.6 LTS
Apache or nginx version (eg, Apache 2.4.25) : Apache/2.4.41
PHP version (eg, 7.4) : 8.2

I am trying to connect Nextcloud with Discourse by Discourse Integration app. This is my configuration in Discourse:

And in Nextcloud:

When i click on ‘Connect to Discourse’ i am redirected to Discourse:

But if i click ‘Authorize’ i get an error, i am not redirected back to Nextcloud and i don’t have any changes in Nextcloud

Error:
Failed to launch 'web+nextclouddiscourse://auth-redirect?payload=h0zAd7muVMb9BOgGy7h9yAHjlfo%2F4H3uW%2BerBcTqjtuI0cAE2i8%2F758rjIJJ%0AZICHZUdkEd2yokRhJZBdY1XuHMdwhfH%2Bixsq%2FJjwp9BI2ptxAY6ZqffmMShm%0APY8dcr2GFCnrJ9Cvbeu1EqbyQ0M0jarTBkphJ4nOeoTkuKNbQJhDkbmDwhup%0A%2Benz%2Bkyn43ddT4GulLXBtl0ZhzbfR0kkkwbnGJZoGWsLBXmWr%2FyltCve4dEI%0AlQZKWexlnasa%2B0hx6gq7C9mx9fT5viVLBBG2RlGGTACI7zppxXAbnmKTebw%2B%0AoRVYJXIAFnboHsr0WbsI65ixJLmj0KccvCBaBssAsA%3D%3D%0A
’ because the scheme does not have a registered handler.

What am i doing wrong?

P.S.
If that’s important i have Discourse SSO app installed and working properly.

No source file or test is identified. Reproduce the flow from Nextcloud’s “Connect to Discourse” entry point through Discourse’s “Authorize” action, then trace the web+nextclouddiscourse callback; done when authorization returns to Nextcloud and the connection state changes.