Ffuser1 you can try composer require fof/username-request:0.4.0
. Note that you will need to run composer require fof/username-request
or composer require fof/username-request:*
again once you want to update, as the Composer update
command will have no effect after forcing a fixed version.
Le us know if that resolves the issue, so we know if that's indeed the new version causing it. I'm personally not using the extension so cannot check right now.