Created attachment 183051 [details]
"URL cannot be empty" error in Tokodon.

SUMMARY
While trying to use Tokodon for the first time (I already had an account) and when prompted for the server url, as the default placeholder says "mastodon.social", I simply clicked enter thinking that the URL should autofill with the default... which did not. I had to manually type the "mastodon.social" url for it to work.

STEPS TO REPRODUCE
1. Try to login with an existing account.
2. When prompted for the server URL, just click enter

OBSERVED RESULT
The "URL cannot be empty" error message pops up

EXPECTED RESULT
The server URL should be autofilled with the default "mastodon.social" as shown in its placeholder and login process should continue

SOFTWARE/OS VERSIONS
Windows: 
macOS: 
(available in the Info Center app, or by running `kinfo` in a terminal window)
Linux/KDE Plasma: Arch Linux
KDE Plasma Version: 6.4.2
KDE Frameworks Version: 6.15.0
Qt Version: 6.9.0

ADDITIONAL INFORMATION