Flood service is undefined

To fix this issue, uninstall login_emailusername and use mail login → instead.

Lamp5 → : I have installed this module for my current project but the issue is still there in the code. I have installed the latest version i.e 2.1.0

I am reopening this issue again.

This module uses class LoginEmailUsernameUserAuthenticationController which extends core class UserAuthenticationController,
Currently the core class UserAuthenticationController doesn't use property flood anymore which causes the error instead it uses property userFloodControl,
This is fixed in the attached patch.

#7 patch works as expected.
Thanks.

Patch #7 looks good!

This change was introduced in #2983395: user module's flood controls should do better logging → . See the CR at https://www.drupal.org/node/3067148 → .

1. So if we directly change the code per patch #7, this module would no longer be compatible with core prior to 9.1.0 and the core_version_requirement in login_emailusername.info.yml would need to change.
2. Or, we need to conditionally see if we've got a userFloodControl member, and if not, gracefully fall back to using a flood member, instead. Then, the module can continue to be compatible with all modern versions of core.

Needs work for either of these solutions. I'd vote for #2 (easier for end users), but the maintainers might prefer #1 for less technical debt.