I got this error:

[ERROR] FATAL UNHANDLED EXCEPTION: /usr/bin/mono() [0x4275d7], 

/lib/x86_64-linux-gnu/libpthread.so.0(+0x11390) [0x7fca2f01b390], 

/usr/bin/mono(mono_lock_free_alloc+0x305) [0x64fad5], 

...

,Debug info from gdb:,====,Got a SIGSEGV while executing native code. This usually indicates,a fatal error in the mono runtime or one of the native libraries ,used by your application.,====

How do I debug it?