I feel your pain, I'm having tons of issues since 1-2 weeks with attaching a mirror client ...
Crashes about 90% of the time, feels like it's trying to hooks on a random program after some testing
Found the issue:
Somehow the latest java 8 version causes mirror to crash upon hooking a lot of the times.
Try to downgrade to java 8 291, download link below => Search for the 291 version
https://www.oracle.com/java/technologies/javase/javase8u211-later-archive-downloads.html