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Hi :wave:
I get a strange error in one of my tasks when I try to register a flow:
```ValidationError: Value is not JSON-compatible```
Does anyone know why?
I could not trace the source of the issue : /

Probably a Parameter with a default_value that cannot be serialized to JSON.

Do you have any parameter with defaults in this Flow?

I had this problem while trying to put the Default value of a Param to a `Decimal()`

all are `str`  and only one is `list` of `str`

it must be this one that’s causing the trouble.