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Fixed in 2020.2.X

Fixed in 2019.4.X, 2021.1.X



Found in








Issue ID




"Unexpected node type." Error is thrown and no Exception is caught when using JsonUtility.FromJsonOverwrite function



How to reproduce:
1. Open the attached project's Scene labeled "Test"
2. Enter the Play Mode
3. Observe the Console Window

Expected result: An Exception is thrown related to the "Unexpected node type." Error warning about the wrong format
Actual result: "Unexpected node type." Error is thrown but no Exception is caught

Reproducible with: 2017.4.35f1, 2018.4.13f1, 2019.2.15f1, 2019.3.0f1, 2020.1.0a15, 2020.2.0a15.

Note: Old format JSON is used

  1. Resolution Note (fix version 2020.2):

    Error message has been removed because it was not helpful. In cases like this it is expected that JSON data for a field may need to be ignored if it cannot be converted to the current field type of an class. Fixed in Unity 2021.2.0a1

  2. Resolution Note (fix version 2021.1):

    Fixed in Unity 2021.1.0b6

  3. Resolution Note (fix version 2020.2):

    Fixed in Unity 2020.2.6f1

  4. Resolution Note (fix version 2019.4):

    Fixed in Unity 2019.4.21f1

Comments (5)

  1. samran263

    Feb 15, 2023 06:27

    Same problem.
    Still happens on Unity 2021.3.11f1.
    any solution?

  2. zalogic

    Jun 02, 2020 09:21

    Extra details: the issue ONLY happens if the target object where the json is deserialized has a field of array type and the json contains that field with a non-array type.

    If it's the other way around and the target object contains a non-array type field and that field in the json has a different type (numeric, array, etc) it will not crash and will be silently ignored.

  3. cristiscripcaru

    Jun 01, 2020 09:32

    I have the same problem. When can you fix it?

  4. FanStudioUK

    May 29, 2020 07:16

    Same here!
    You only need to throw an exception...

    Come on guys, it's an easy fix :)

  5. zalogic

    May 28, 2020 10:06

    Same problem.
    Still happens on Unity 2019.3.14f1.
    No catch-able exception is thrown.

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