Why there is a runtime error? FLAG_IMMUTABLE

I built an application that can be used to send an SMS message, but when I try to send it, it shows me this error

These are my blocks

Why there is a runtime error?

Something has not been upgraded to SDK31… you could have found that answer yourself after doing a search in the community…

Are you using extensions? Whicb ones?

The texting component itself has an error…

Try this extension instead

That’s true however even MIT has the same problem with texting component.

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Notification component is also having the same problem