I need help with this error

[ERROR] addons/neuro planes/lua/entities/sent_combine_helicopter_p/init.lua:953: 'end' expected (to close 'function' at line 673) near '<eof>'
1. unknown - addons/neuro planes/lua/entities/sent_combine_helicopter_p/init.lua:0

Also when i spawn the planes in it dosent work and the vehicle freezes and i cant move or get in it