I am facing issue in Files Table. I have column name “File” ,I did the setup to get the size using formula, in column “File size” but that is not working now. Can you please help me with this issue? Actually, It was working till yesterday , but today...

I have multiple Files in my Airtable. I want a Column for the Extension of Files. Extensions are .Docx, .Xlxs, .PDF, .AI and Multiple Other. I did use the Trim Formula but its not working too well for me. Please help.