PHPhotosErrorInvalidState

I updated my MacBook Pro (13-inch, 2017, Four Thunderbolt 3 Ports, Processor: 3.1 GHz Dual-Core Intel Core i5, Memory 8 GB 2133 MHz LPDDR3) to macOS Big Sur Version 11.5.1 recently. Ever since, my Photos Libraries on External Hard drives cannot be opened. The "PHPhotosErrorInvalidState" message keeps appearing. Even when I tried to create a new library, the same message would appear. HELP!!! I have over 10 years of photos/videos stored on many external hard drives that cannot be accessed now. All of my past few months of works are also stored on these libraries which cannot be opened now. URGENTLY NEED HELP!!!!