Having problem packaging

Please help my game is due in 2days and when i package it and try and open it it comes up with this

please help i don’t know what to do

Hi gretsky,

This appears to be the same problem from the same Engine version (UE4.8) as the following link:

Failed to open descriptor file error

Please try applying the solution described in the Answer to your project and let us know if this resolves the issue.

thank you will have a look :))