Such an error could be experienced if you are trying to save a big image when the ImageEditor is used in enabled CanvasMode. If this is the case, you can fix this by configuring the size of the allowed JSON string length:
The value in the example is almost double the default value and you could go with it in your project, or increase it if needed.
In case this does not help in solving the case I will need to ask you for a sample project reproducing the issue
, so we could examine it on our side.
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