feat: add a warning in debug mode upon "Call to 'getMe' failed! (401: Unauthorized)" that the bot token is incorrect

[janek]

hi!

I'm trying to deploy my bot and starting with following examples in the docs. I get to the same error in 2-3 ways:

• when following https://grammy.dev/hosting/fly to try to deploy to Fly
• when cloning https://github.com/grammyjs/examples/tree/main/setups/docker-deno and trying to run it locally with docker, or deploy to Fly

Here's a copy-paste of the error from my local attempt with Docker:

docker run --env-file .env dockerdeno

WARNING: The requested image's platform (linux/amd64) does not match the detected host platform (linux/arm64/v8) and no specific platform was requested
Task start deno run --allow-net --allow-env main.ts
error: Uncaught (in promise) GrammyError: Call to 'getMe' failed! (401: Unauthorized)
    return new GrammyError(
           ^
    at toGrammyError (https://deno.land/x/grammy@v1.22.4/core/error.ts:43:12)
    at ApiClient.callApi (https://deno.land/x/grammy@v1.22.4/core/client.ts:328:20)
    at async withRetries (https://deno.land/x/grammy@v1.22.4/bot.ts:660:41)
    at async Bot.init (https://deno.land/x/grammy@v1.22.4/bot.ts:307:22)
    at async Promise.all (index 0)
    at async Bot.start (https://deno.land/x/grammy@v1.22.4/bot.ts:439:9)

[rojvv]

Closing per https://t.me/grammyjs/229944.

[janek]

In my case the token was invalid because I accidentally appended a letter. It would have been ideal to get a "Token might be invalid" suggestion in the error, but I should have also figured it out from the 401.

[KnorpelSenf]

This is already documented at https://grammy.dev/resources/faq#_401-unauthorized

[janek]

@KnorpelSenf agreed, and I missed that - but what I meant now is in code. If it's clear that 401 means error is on the side of the user and token is invalid, then it would be safe and very helpful to put that in the error message (to make it more informative).

[KnorpelSenf]

That's a really good idea actually

[janek]

Nice, I'm glad you like it!

[KnorpelSenf]

Please review #574 and approve it if these changes work for you

[janek]

Thank you for adding and merging this, and listing me in contributors! 💟 That's so nice.

I'm sorry I didn't answer sooner, I don't check my GitHub notifications often enough

[KnorpelSenf]

You're welcome :) No worries!

You can enable email notifications so you don't have to check manually