Photos Library troubles

I recently opened my Photos in Mac OSX and there was a prompt that it needs to be repaired.

I clicked on the repair button but nothing happens - there is no progress from the progress bar and the prompt just comes out again after every 5 mins (after i click on it again).

Can anyone help?

Thanks!

Welcome to our forums.

Follow these steps to use the Photos library repair tool:

Hold down Option-Command while you open Photos.

In the dialog that appears, click Repair to start the repair process.

Use the Photos library repair tool - Apple Support

https://support.apple.com/en-us/HT204967

Can you provide information about your Mac, and information about the OS version. Please be specific as possible. Also, is your Photos library large, or maybe, on a different drive, or did you recently upgrade the OS?