something about java.lang.UnsatisfiedLinkError: no net in java.library.path

[AHandsomeChicken]

I rented a server for me and my friends but one of my friends crashes after a minute or several and the crash logs are titled java.lang.UnsatisfiedLinkError: no net in java.library.path, how can I fix this so my friend can stably play Tekkit 

here is a screenshot of the log 

[JaariAtmc]

The whole crashlog, thank you.