mergeSAM.py error

[WanghcPKU]

Hello!
My program meets some problems.
I checked the log file, and found this.
The first time I ran my code, I got this error.

[E::bgzf_uncompress] Inflate operation failed: 3
[E::bgzf_read] Read block operation failed with error 1 after 0 of 4 bytes

Traceback (most recent call last):
File "/lustre/user/taowlab/wanghc/work/AC/hic/HiC-Pro_3.1.0/scripts/mergeSAM.py", line 223, in
for r1, r2 in zip(hr1.fetch(until_eof=True), hr2.fetch(until_eof=True)):
File "pysam/libcalignmentfile.pyx", line 2209, in pysam.libcalignmentfile.IteratorRowAll.next
OSError: truncated file

The second time I ran my code, I got this error.

[E::bgzf_read_block] Invalid BGZF header at offset 23494271862
[E::bgzf_read] Read block operation failed with error 2 after 0 of 4 bytes

Traceback (most recent call last):
File "/lustre/user/taowlab/wanghc/work/AC/hic/HiC-Pro_3.1.0/scripts/mergeSAM.py", line 223, in
for r1, r2 in zip(hr1.fetch(until_eof=True), hr2.fetch(until_eof=True)):
File "pysam/libcalignmentfile.pyx", line 2209, in pysam.libcalignmentfile.IteratorRowAll.next
OSError: truncated file

I really need your help!