Hello ,
Welcome to the LastPass Community!
This may happen when the extension updated incorrectly or the cached information on the browser has become stale. You can try following these steps to fix this:
- Uninstall the LastPass browser extension.
- Clear browsing data using the "all time" option.
- Restart the browser
- Install the extension from https://lastpass.com/misc_download2.php
Cheers,
Manuel - Community Support