Can't open my migrated photo library in "Photos" that now has cloud images in it
A couple of years ago I migrated my iPhoto library to the new "Photos" app but have been storing it on an external hard drive. I was able to open it in the past but now get this message "The library could not be opened" (5416). I also have images from cloud in new Photos app so could the reason why I can't open old library now? I need to access images in old IPhoto and could use help. Thank you
MacBook Pro 15″, macOS 10.15