tables with the same line data several times

[Jean-Philippe Bolle]

Hello everyone,

I have a problem with a table added to looker studio: whereas in the google sheets connected to looker studio, I have unique data, the table created on looker studio shows the same data duplicated several times. 

What's the problem? 

Additional information:

1. the type of dimensions = text

2. the table is created from a combination sheet which unifies three data sources linked to a google  spreadsheet.

3. the google sheet data is connected with appsheet.

looker studio:

compared with sheets: