invalid contig chr3

[tslzs]

Traceback (most recent call last):
File "/opt/conda/envs/clipper3/lib/python3.7/multiprocessing/pool.py", line 121, in worker
result = (True, func(*args, **kwds))
File "/opt/conda/envs/clipper3/lib/python3.7/site-packages/clipper-2.1.2-py3.7-linux-x86_64.egg/clipper/src/call_peak.py", line 932, in call_peaks
subset_reads = list(bam_fileobj.fetch(reference=str(interval.chrom), start=interval.start, end=interval.stop))
File "pysam/libcalignmentfile.pyx", line 1081, in pysam.libcalignmentfile.AlignmentFile.fetch
File "pysam/libchtslib.pyx", line 686, in pysam.libchtslib.HTSFile.parse_region
ValueError: invalid contig chr3
"""

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
File "/opt/conda/envs/clipper3/bin/clipper", line 33, in
sys.exit(load_entry_point('clipper==2.1.2', 'console_scripts', 'clipper')())
File "/opt/conda/envs/clipper3/lib/python3.7/site-packages/clipper-2.1.2-py3.7-linux-x86_64.egg/clipper/src/main.py", line 266, in call_main
main(options)
File "/opt/conda/envs/clipper3/lib/python3.7/site-packages/clipper-2.1.2-py3.7-linux-x86_64.egg/clipper/src/main.py", line 105, in main
peaks_dicts.append(job.get(timeout=options.timeout))
File "/opt/conda/envs/clipper3/lib/python3.7/multiprocessing/pool.py", line 657, in get
raise self._value
ValueError: invalid contig chr3

hello everyone, I want to know how to address this issue, anyone can help me?