Column name not detected when connecting Excel with Microsoft Fabric PowerBI

Hello All,

newbie here

So I was trying to connect a data set from the excel sheet in share point using link path to the app.powerbi.com. When In the power querry option, the suggested table didn't recognized my column name and instead showing column1, column2, etc. 

and I dont see any transform option, the only one available in the display option seems disabled.

Thanks for the help