Exported Video Audio Not Working

I'm trying to export a 30 minute long video and when I export it as a .mp4 for YouTube the videos audio works from the start of the video until the 7 minute mark and then the audio automatically stops working throughout the whole video. I've tried contacting Blackmagic technical support for any help and they told me to post on the forums so others can help me for peer support because the representative said they don't typically provide much of support for our free users.

DaVinci Resolve Version: 15.1.1.005
DaVinci Resolve 15 Free
Operating System: Windows 10

I've had the same exact problem. So far, I haven't found a solution :/