Hi people. I'm having the following problem:

And the thing is that i'm using the same configuration on the right side of the flow and it works perfectly. It doesn't give me much more information.
These are the settings I'm using on both sides:

And these is the content:

As I mentioned before, I'm using the same configuration on both sides of my flow and on the right side it works but not on the left.
For more context, this is what I mean by right and left side:

If anyone can think of why this might be happening, it would be very useful. Thanks.