Error solver
Paste your error. Understand it in plain English.
Drop the red text from your terminal or console below. We will tell you what it means, why it happened, and how to fix it — free.
Or try a common one
Read any error
Every error has the same three parts.
TypeError: Cannot read properties of undefined (reading 'map') at renderList (app.js:42:18)
- The type — the category of problem (TypeError, SyntaxError, NameError…). It tells you what kind of mistake to look for.
- The message — what actually went wrong, in the language's own words. Read it literally, not anxiously.
- The file & line — where it happened. Start there and work back up the stack trace.
Still stuck?
Some errors are best solved with a person.
If the message will not budge, a mentor who specialises in your language can look at it with you — and teach you how to spot it next time.