I’m having the same issues, I’ve tried a truck load of troubleshooting found here and in NoMachines docs. However, I’m not ever getting it to show back up, and it’s constantly dumping to logs, to the point I’ve had to uninstall it to get it to chill out, it did the same thing when I added the strace to debug the monitor. I will however note that it ends up with a segfault, but the logs report a monitor error.