Large Data uploading

What is your datasource? Microsoft has a guide on data optimization here: https://learn.microsoft.com/en-us/power-bi/guidance/power-bi-optimization

This does not look like a size-related error though, I would start with doing an internet search on the error message you are receiving. Here's a blog article on the error: http://nimishgarg.blogspot.com/2014/04/ora-01830-date-format-picture-ends.html

Any help please !!!