Load data from HTML which contains attributes `rowspan=1` and `colspan=1`

[Spixmaster]

Is your feature request related to a problem? Please describe.* I have an HTML with rowspan=1 and colspan=1.

Describe the solution you'd like Following https://tabulator.info/docs/6.2/data#table, an error occurs as these attributes are present as stated in the note.

Describe alternatives you've considered Since rowspan=1 and colspan=1 are the default anyway, this should be accepted without issue.