'No permakey found in response!' if firewall blocks the upload

[LinuxOnTheDesktop]

My firewall (which is Windows Firewall together with Windows Firewall Control) blocked your program. The block generated the above misleading message. Once I told the firewall to grant access, everything worked. (That said: see #83.) So the message needs changing.

[SamuelTulach]

With default firewall settings, you should be asked if you want to allow connections from the program, so I presume you either have edited those settings or used some debloater/privacy tool that has changed it.

[LinuxOnTheDesktop]

The aforementioned Windows Firewall Control is set to block a connection unless a rule explicitly allows it. My point though is as follows. When your program is blocked by a firewall and thus (I presume) receives no 'response' at all, then the error message that it (your program) gives would do well to be more informative.