The requested operation is invalid. Server Response

[Fischio]

Good evening, I have a problem with a power app that connects to an online excel sheet.
It reads the first 300 rows, but if I add more rows the app doesn't read them and issues this error

The requested operation is invalid. Server Response: Table6 failed: Expression "Employee eq null" is not supported.

Table6 is the table I am going to read;
Employee is the column in the sheet 

The Employee column does not have any null records.

This error is displayed for all the new rows I have added.

do you have an idea how to bypass this error?

thanks

[Drrickryp]

@Fischio 

Excel can be quirky.  Don't add additional rows to the table in Excel.  If you need to append records to the table, do it through PowerApps.