GarageBand 10.3.2 crashes at start up with specific file

Hi everyone,

I am using a 2012 mac mini running 10.14.6. GarageBand seems to be working fine on the other files I have tested, but one of my songs will not open. The file starts to load and then crashes. The last time I opened this file was probably two weeks ago. I haven't installed any new plugins or anything since then. I have saved multiple iterations of this song over the past few months and the odd thing is that none of them will open, but other songs will. I was able to get the file to open by holding down 'control' at launch and choosing to deactive core audio. When I did this, there was one track that had a red slash through the solo button (picture of headphones). I thought GarageBand might be trying to tell me what the problem was, so I tried deleting that track and relaunching. That did not fix the crashing. Any ideas what's going on here and how to fix it?? I really, really, really do not want to lose this file!

I do have Time Machine backups but have not tried restoring to an earlier state yet.

I have attached *most* of the crash log (it exceeded the character limit, so I deleted the last bit)

Thank you so much for any help you can offer!!