paraview error when i upload csv file with boundary values

while uploading results.csv file to paraview its giving following error as shown in the figure below, when i unselect the "interpret values as categories " option the error shown in 2nd figure giving. paraview showing the interior values properly as shown in 3rd figure but when i write the code for boundary values its giving the following error as shown in 1st and 2nd figures. i tried searching the error on google but i didnt find much, the values in results.csv file are correct but the paraview giving this error, can you please give me any suggestions to handle this issue.

Thank you