If you've needed to reset your password and haven't been able to do it because of an error of this nature, I have fixed it.

Google is cutting off access to some of its old code libraries, and the "reCaptcha V1" was one of those.

You should be able to reset your password now. Sorry for any inconvenience.

To clarify, this is for resetting your password because you forgot it, not changing your password while successfully logged in.