this error means that the computer name DESKTOP-OT24SK1 that you’ve set in the URL field is unknown and cannot be resolved to an IP address, which is required in order to connect to the mentioned server. If the SVN server is running on the same computer as Bitbucket server, then you can just use
localhost as the hostname in the URL:
or use the loopback address or real IP address of your computer:
replace the placeholder in the last example with the real address.
If, however, your Bitbucket is running in a docker container, while the SVN is in the host OS, then the connection may not be that easy and depends on how your Docker software is configured, here are more details on that:
Hope it will help.