Kaiyu Yang

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I'm not sure what's happening for the `CommSemiring.toSemiring_injective` example and will take a more detailed look when I have a chance (likely a few weeks later).

Do you have a minimal script for reproducing the error using the latest version of LeanDojo (no LeanUniverse)?

> It seems like it's because `Std.HashMap.find?` has been deprecated in Lean. and "ExtactData.lean" include such a fuction. open it and listen to Lean InfoView, changing the "find" to "get"...

The error seems to be caused by recent Lean/mathlib upgrades. I'll let you know after it's fixed.

I just fixed it in the `main` branch (please try) and will release a new version after running unit tests.

will take a look when I have a chance (hopefully next week)

I believe this is related to https://github.com/lean-dojo/LeanDojo/issues/211 and will not be solved anytime soon.

Glad to hear that you've managed to reproduce the experiment! Unfortunately, this project was five years ago, and I'm no longer able to actively maintain it.

Thanks! I'll be able to take a look next week.

Sorry I've been swamped recently but will take a look when I get a chance!