When you want to be the first to have the newest EdgeKeePass feature you need this extension.
If you're looking for the stable release, you can find it at https://microsoftedge.microsoft.com/addons/detail/edgekeepass/jnhjknbfnclancjpknceboifoegiompf

This is an open source extension that securely connects KeePass to your browser for automatically entering logins into websites.

The source code can be found at https://github.com/RoelVB/ChromeKeePass
And if you're experiencing any issues you can report them at https://github.com/RoelVB/ChromeKeePass/issues