How to fix "Unexpected token } in JSON at position 42" in apps, APIs, config files
SyntaxError: Unexpected token } in JSON at position 42
What this error means
Something at that position is not valid JSON — very often a trailing comma before } or ].
Why it happens
- Trailing commas
- Comments
- Single quotes
How to fix it
- Look at the character at the given position
- Upload the file here to fix every syntax issue at once
About JSON file files
JSON is strict: one stray comma or a single quote makes the whole file unreadable. Most broken JSON comes from hand edits, JavaScript objects pasted as JSON, or Python output.