I am using sharepoint online modern site. I have build one console application using CSOM.
I able fetch custom column value in code but existing column values not able to fetch in code .
I have TEST document library . I have added document i want to fetch file name in code but i am getting following error. I have created column country and added value at the time document upload .i am able to fetch name of this column .issue with Name column
Please help me.