Mac mini

If you find that the Debug menu is a little irritating when trying to use it with 1Password since by default they share the same keyboard shortcut ( ⌘+/ ) , you can go with one of the two options

1. Change the shortcut key to access 1Password from preferences of 1Password 
2. Remove / Get rid of the Debug menu which conflicts with the shortcut keys

For 2, Open up your favorite terminal and type in the below command. Use ‘0’ to disable the menu and ‘1’ to enable it. Restart Safari after you are done.

defaults write com.apple.Safari IncludeDebugMenu 0

The above did not work, the below command worked. 

defaults write com.apple.Safari IncludeInternalDebugMenu 0

Source: Mac World