Encountered an internal AutoML error. No objects to concatenate.

Hello,

When submitting an AutoML job, the training fails and I get the following error:

Encountered an internal AutoML error. Error Message/Code: ClientException. Additional Info: ClientException:
Message: No objects to concatenate
InnerException: None
ErrorResponse
{
"error": {
"message": "No objects to concatenate"
}
}

This only happens for that specific dataset which contains no missing values but quite some 0s in the target column (time series forecasting). I did make sure to follow this [recommendation](https://stackoverflow.com/a/74877002) but that did not solve the issue.

thanks in advance for the help!

Kind regards,
Ervin