How to fix run-time error 53 every time I open a file in MS Word, Excel, or PowerPoint on Big Sur?

Since I installed Big Sur, I have run into this problem every time I open a document using Word or a worksheet using Excel or a slide show in PowerPoint: Run-time error '53': File not found: Library/Application Support/Adobe/MACPDFM/MacPDFM.framework/Versions/A/MacPDFM **This is very annoying, as I have to dismiss this window up to four times in a row every time I open a document** on these Microsoft Office applications. I searched everywhere, including the official Microsoft website, macOS tip websites, but the information was incomplete, obsolete and did not offer a practical solution. Does anyone know how to fix this really annoying problem?