Problem with "repo:contains.commit.after(...)" keyword

Created by: zhzz

Hello, it seems like I've found an issue with the latest version.

Sourcegraph version: Sourcegraph.com

Steps to reproduce:

1. Try searching this request: repo:contains.commit.after(yesterday)

Expected behavior:

Getting a list of repos.

Actual behavior:

Getting the error:

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Actually, I've found this while using the GraphQL API of my company's self-hosted instance (3.31.2). I was doing this request and it used to work earlier. Now it's broken, responding 504. I just reduced the repro till the request above.