I have attached the error screen.
I was able to connect to the PBS web screen, and when I captured packets on the PBS side, I was able to confirm that some kind of communication was occurring.
When I connected from PVE, no logs were displayed at all.
root@mtn01cld58:~# journalctl -f
-- Journal begins at Fri 2025-02-28 20:58:36 JST. --
Mar 28 08:34:39 mtn01cld58 systemd[1626]: Listening on GnuPG cryptographic agent and passphrase cache (access for web browsers).
Mar 28 08:34:39 mtn01cld58 systemd[1626]: Listening on GnuPG cryptographic agent and passphrase cache (restricted).
Mar 28 08:34:39 mtn01cld58 systemd[1626]: Listening on GnuPG cryptographic agent (ssh-agent emulation).
Mar 28 08:34:39 mtn01cld58 systemd[1626]: Listening on GnuPG cryptographic agent and passphrase cache.
Mar 28 08:34:39 mtn01cld58 systemd[1626]: Reached target Sockets.
Mar 28 08:34:39 mtn01cld58 systemd[1626]: Reached target Basic System.
Mar 28 08:34:39 mtn01cld58 systemd[1626]: Reached target Main User Target.
Mar 28 08:34:39 mtn01cld58 systemd[1]: Started User Manager for UID 0.
Mar 28 08:34:39 mtn01cld58 systemd[1626]: Startup finished in 615ms.
Mar 28 08:34:39 mtn01cld58 systemd[1]: Started Session 14 of user root.
<ーーーAdd storage from PVE
q^C
This is weird. Could you login into the WebUI of the PBS with the same user you use on the PVE host to add it. Then replace the last part of the URL with