If the obisidian://advanced-uri?...
link does not work for you, the best way to troubleshoot it is to create the link manually – say in TextEdit or other plain text context – and test it apart from the PopClip extension. File in the fields in the test URL with dummy text. If the test URL created this way still does not work, then make sure your Daily Note and Advanced URI plugin settings in Obsidian are correct. If that still results in error, then open a ticket with the devleoper of the Advanced URI plugin.
The PopClip extension in @nick’s revision here works. Errors are most likely on the user side.