I found a number of problems with your LayOut file. I expect the crashing is due to a missing reference for the SketchUp file for page 7. Notice there's no path for that reference. (The References actually labeled as missing are marked that way because their paths point to a location on your computer, not mine.
Screenshot - 11_25_2020 , 7_32_48 AM.png
This makes me wonder about how you are inserting the .skp files into LayOut.
I've deleted the viewports associated with that file and purged the unused references.
Screenshot - 11_25_2020 , 7_41_00 AM.png
I notice that all of your viewports use the Last saved SketchUp view for the scenes. This is not good practice. If have some need to go back to a SketchUp file and make some changes to the model, you need to make sure that you don't change the view or your viewports in LO can be screwed up. Much better to create scenes in the model file so you have fixed views of the model to use for the viewports in LayOut. If you do that, it won't matter what the view in SU is when you save the model.