Minified React error #31;

Bug
1

Making a very simple page with just a list of items in a repeater. Items are objects with just two properties. When adding component for item with one of the properties databound, no problem… but as soon as I add an element bound to the second property, I get a crazy error:

Error: Minified React error #31; visit https://reactjs.org/docs/error-decoder.html?invariant=31&args[]=Tue%20May%2009%202023%2010%3A05%3A12%20GMT-0300%20(Argentina%20Standard%20Time) for the full message or use the non-minified dev environment for full errors and additional helpful warnings.

which leads to:

**Objects are not valid as a React child (found: Sun May 07 2023 20:40:27 GMT-0300 (Argentina Standard Time). If you meant to render a collection of children, use an array instead.**

Doesn’t matter if I change the name of the properties or anything else… as soon as I want a second property, this error occurs. I cannot understand what could be wrong… help? Page is here:

https://worthypickle.backendless.app/api/files/ui-builder/containers/AK_Playground/index.html?page=TimeDisplay

2

Hi @Alex_Klein,

we’re looking into it… Will get back soon.

Regards

1 Like
4

Hi @Alex_Klein,

When you create a list of objects, the Offset Date block produces a date object. Objects cannot be rendered because they are just a data structure and it is not clear how to render them. Only primitive values (such as strings, numbers…) can be rendered. Therefore, this is an expected error, although not entirely obvious. You need to format the date using convert to dateString block to get a string.

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Regards,
Stanislaw

5

Thanks for the quick solution!