48When everything breaks

It will break. That's not "if", it's "when". Here's the working order.

Don't panic and don't delete. A beginner's first instinct is to wipe it and redo it. Fixing is almost always better.

Give it the whole error. Complete, first line to last. Don't paraphrase - copy. There is usually an exact point of failure inside, and it will spot it.

Say what you did just before. "It worked, then I asked for a button, and now this." That's half the diagnosis.

One hypothesis at a time. If it offers three options, try them one by one. Otherwise you won't know which one helped.

Don't believe it, check it. If it says "it works now" and you have doubts - run it and look. Arguing is pointless; checking takes seconds.

And the thing from earlier: if you've been at it more than half an hour, start a new chat and describe the problem afresh. A clean context works wonders.