Setting an array element with a sequence

when uploading a dataset similar to imdb, but with floating point numericals instead of binary ones, I get an error in training
“setting an array element with a sequence.”
The model does not show any errors. How can I resolve this?
The model is exactly the same as in the imdb-dataset.
Data looks like this:

Thanks and best wishes

Okay, I found the solution myself.
The input elements have to be of the same length, so a padding at the beginning was the solution

Yes in case of multiple inputs it required data of same sequence length.