Sound randomly cutting off after export

My sound after export is working fine for a bit, but around 1 min in, it just stops. I worked for hours on the project, can anyone
help me?

Sorry but we do not know why. There are so many variables that can affect the output. Check if you have a volume or mute filter on a clip, track head, or Master in the top left corner of the Timeline. It might have a bad duration. If so, you can disable it or remove it to see if that is the source of the problem.