The update of Parallels Panel has failed: “Syntax error in file panel.inf3: Error parsing Element”
The issue is temporary and caused by network connectivity issue to one of the autoinstaller mirrors.
As a workaround use another autoinstaller mirror, add the following IP addresses for autoinstall-win.pp.parallels.com to the hosts file:
18.104.22.168 US, Kansas
22.214.171.124 US, California
126.96.36.199 US, California
188.8.131.52 EU, United Kingdom
184.108.40.206 EU, Germany