Steps to reproduce

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The source bytes were:
[102, 108, 117, 116, 116, 101, 114, 58, 32, 226, 149, 145, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 217, 132, 216, 167, 32, 216, 163, 217, 133, 217, 132, 217, 131, 32, 216, 180, 216, 185, 217, 136, 216, 177, 216, 167, 217, 139, 32, 217, 134, 216, 173, 217, 136, 217, 131, 32, 216, 163, 217, 134, 216, 167, 32, 217, 132, 216, 167, 32, 216, 163, 217, 129, 216, 185, 217, 132, 32, 216, 180, 217, 138, 216, 161, 32, 216, 179, 217, 136, 217, 137, 32, 216, 163, 217, 134, 32, 216, 163, 217, 142, 216, 173, 216, 168, 217, 131, 32, 216, 163, 217, 131, 216, 171, 216, 177, 32, 217, 129, 216, 173, 216, 179, 216, 168, 32, 84, 97, 114, 101, 107, 32, 239, 191, 189]

Expected results

converting the json string

Actual results

bad error bug

Code sample

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Screenshots or Video

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Logs

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Flutter Doctor output

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