I was trying to launch the photos library repair tool by holding down option-command while opening photos. However this seems to be not working in macOS high sierra. Instead of repair tool, the photos app is opened.
I was referring to the instructions in the below link, to launch the repair tool: https://support.apple.com/en-us/HT204967
Has any one launched the repair tool in macOS high sierra? Please advise how to launch the repair tool.