Thanks for your question. Firstly, can you confirm that vlass_extended exists in your MyDB? One way you can do this is by opening a Jupyter Notebook on our server and executing the following:
from dl import queryClient as qc
This will list all tables currently saved in your MyDB.
Secondly, I tried to reproduce your error by copying and pasting the first few lines of the table you provided and uploading it to MyDB. When I pasted it into a text file it showed up with spaces in between each row, like:
As opposed to the typical:
Do you know if your actual table has spaces in between each row or is it just from how your post was formatted? If it does have spaces, that will cause an error upon uploading it to MyDB.