Looking at your folders panel, all those ? marks. They indicate missing folders, often caused by moving/renaming folders outside of LrC, or due to being on a external hard drive not connected, or far worse on a Network share. (the later two, not indicative from what is presented)
This needs to be addressed. You need to update those folder locations.
The more of a mess your folders get, the more likely you will get such errors. and eventually, catalog corruption.