Fix for handling FileNotFoundException a project file listed in solution is not found, thus preventing server from crashing in this situation.
Fix for handling FileNotFoundException a project file listed in solution is not found, thus preventing server from crashing in this situation.

x335/omnisharp-server,OmniSharp/omnisharp-server,corngood/omnisharp-server,x335/omnisharp-server,syl20bnr/omnisharp-server,corngood/omnisharp-server,syl20bnr/omnisharp-server