About the message
What you should do
To resolve the issue:
- Uninstall the 1Password extension.
- Restart Safari.
- Reinstall the extension from the Safari Extensions Gallery.
Get more help
If you’re still having trouble, remove old copies of 1Password.safariextz:
- Quit Safari.
In Finder, choose Go > Go to Folder. Copy and paste the following path and press Return:
Move all copies of 1Password.safariextz to the Trash.
Empty the Trash.
Open Safari, and install the 1Password extension from the Safari Extensions Gallery.