UnboundLocalError: local variable 'out_bam_file' referenced before assignment

[NJU-Bio-Info]

When I run:

hicBuildMatrix -s ../../2.map/r1.sam ../../2.map/r2.sam -o hic_matrix.h5 --binSize 10000 --QCfolder QC --doTestRun --outBam TestRun.bam -rs DpnII.bed HinfI.bed -seq GATC GA.TC --danglingSequence GATC A.T

it throw an error message:

Traceback (most recent call last):
  File "/share/apps/anaconda3/envs/python3_2/bin/hicBuildMatrix", line 7, in <module>
    main()
  File "/share/apps/hicexplorer/lib/python3.8/site-packages/hicexplorer/hicBuildMatrix.py", line 270, in main
    pKeepSelfCircles=args.keepSelfCircles, pKeepSelfLigation=args.keepSelfLigation, pGenomeAssembly=args.genomeAssembly)
  File "/share/apps/hicexplorer/lib/python3.8/site-packages/hicexplorer/lib/buildMatrixMethods.py", line 1169, in createMatrix
    out_bam_file.write(mate1)
UnboundLocalError: local variable 'out_bam_file' referenced before assignment

hicBuildMatrix version info:

hicBuildMatrix 3.7.6

How can I solve it?