You are in chromium-committers.

What are you trying to do, and what's the actual error you're seeing?

I'm trying to merge a commit into M54. Here's the relevant prat of drover's output:

...
Fetching pending ref refs/pending/branch-heads/2840...
Cherry-picking commit on top of pending ref...
Pushing commit to refs/pending/branch-heads/2840... It can take a while.
Push failed with exit code 1.
To https://chromium.googlesource.com/chromium/src.git
!	HEAD:refs/pending/branch-heads/2840	[remote rejected] (prohibited by Gerrit)
Done
Fatal push error. Make sure your .netrc credentials and git user.email are correct and you have push access to the repo.
Failed to push. If this persists, please file a bug.
Error: Command 'cl land --bypass-hooks' failed: Command '['git', 'cl', 'land', '--bypass-hooks']' returned non-zero exit status 1

I need to merge my changes into 2840 asap. Any updates on why I'm getting this error?

As Pawel said, you are already in chromium-committers group.

Please make sure you've correctly configured local credentials (~/.gitcookies file) to use @chromium.org account. See https://chromium.googlesource.com/new-password

Also verify that "git config user.email" reports your @chromium.org email.

I confirm the issue was with the ~/.gitcookies file. Drover works for me now. Thank you.