Error when Enabling & Disabling plugin at 4.3.0

## Bug reproducibility
**How does the problem occur/what are the steps to reproduce it?**
Turn the server on (enable/disable the plugin)

## Error
**Is there an error? Save it via https://mclo.gs/ and link paste the link.**
https://mclo.gs/ajBtcc2

## Server information
**Type '/maintenance dump' and paste the given link here**
Can’t because the plugin can’t even enable