Could not retrieve index file for '/gpfs/home/sample.clean.bam'

[sanjin725]

Dear administrator, Hello, I made an error when drawing a heat map with ALLHiC_plot: "Could not retrieve index file for '/gpfs/home/liyixian/pxx/HIC/allhic/sample.clean.bam''

"what is the cause of this? is there any solution?
My code is “ALLHiC_plot -b sample.clean.bam -a groups.agp -l groups.chrn.list -m 500k -o groups.hic.heatmap”
xiaoxinpei