Login failed due to *auth/account-exists-with-different-credential*.

> Please let me know if I should not post the issue here. I will remove it, and kindly inform me where or whom I should contact to resolve the login issue.

For some reason, I need to switch the login method from a Google account to a GitHub account. I suspect oss-fuzz.com has some protection that verifies the saved credentials against the current ones used. An error appears stating, "Firebase: An account already exists with the same email address but different sign-in credentials. Sign in using a provider associated with this email address. (auth/account-exists-with-different-credential)" when I choose "sign in with GitHub" instead of "sign in with Google," as I usually do.

The Google account I used previously is liang.he@intel.com and I am attempting to use this GitHub account: https://github.com/lum1n0us instead.

The issue names oss-fuzz.com, Firebase authentication, Google, and GitHub, but no source files, tests, or entry points. Start by locating the site's authentication configuration and provider-account linking flow; done means establishing whether switching providers is supported and documenting or resolving the account-linking path.

Written by the indexing model from the issue text.