Starting today I've been getting this strange error. Even stranger is the plugin was working fine yesterday, and as far as I know nothing has changed. I've restarted the server twice to no avail. I've ensured all the YML configs are UTF-8 encoded, and even re-downloaded the plugin from the website but nothing has changed.

The full error message (first line of the stacktrace) is as follows:
org.yaml.snakeyaml.error.YAMLException: java.util.zip.ZipException: ZipFile invalid LOC header (bad signature)

Here's my full log: https://mclo.gs/JMZu5Y5

You have quite a few error messages...

Since ProtocolLib has the same issue, I'm unsure if this is a PlugManX specific issue.

I will try to do some testing on my end though.

Can you please tell me your Java version?

Yeah we recently updated to Minecraft version 1.20 which is why there is a lot of errors. I've slowly been going through and fixing them. We are running Java JDK 17.

I just re-installed ProtocolLib and it seems to have fixed both plugins, which is strange to me because as far as I can tell this plugin doesn't use ProtocolLib.