What does 'Unrecognized token' mean in a JSON parse error?

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Grade: Education Subject: Support
What does 'Unrecognized token' mean in a JSON parse error?
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An 'Unrecognized token' error in JSON parsing means the parser encountered a character or sequence of characters that doesn't conform to the JSON syntax rules. This could be an invalid character, a misplaced comma, an unexpected quote, or a data type that isn't allowed in that position. It essentially means the JSON is malformed.