I am using SolidWorks 2019 SP2. I am having issues opening a SW 2019 drawing file despite having no issues with the model file. I receive the following message: "SOLIDWORKS encountered a problem in the file: G:\filename...slddrw". The file will partially display one sheet of the 18 sheet drawing, but I can't access the other sheets nor make any changes to the one sheet that partially displays. This file worked fine until recently. Does anyone have any idea as to what happened?

Update - so I re-drew the drawing, and all seemed well for a few days. Now, I am unable to edit part files within the assembly model without SW crashing. Is there any way to recover these files?