I have uploaded four BAM files to the galaxy. I ran BAM coverage on them with 100 bin. One file shows single line of analysis with zero as the coverage value. While all the other files gave me a BED graph format data for all the data points with values. I tried re-uploading my BAM file and still have the same issue. Can someone please let me know what can be done now as I don't understand where the error is. Thank you.