CalledProcessError

[gmykim]

I am getting a CalledProcessError regarding the benchmark vcf, even though it has been indexed.

2021-05-05 18:27:33,391 WARNING  No reference file found at default locations. You can set the environment variable 'HGREF' or 'HG19' to point to a suitable Fasta file.
Hap.py v0.3.14
[E::vcf_hdr_read] no sample line
**_**Failed to open or file not indexed: /u/home/n/neharajk/scratch/HG002_GRCh37_1_22_v4.2.1_benchmark_19.vcf**_**

2021-05-05 18:27:41,571 ERROR    Command 'vcfcheck /u/home/n/neharajk/scratch/HG002_GRCh37_1_22_v4.2.1_benchmark_19.vcf --check-bcf-errors 1' returned non-zero exit status 1
2021-05-05 18:27:41,571 ERROR    Traceback (most recent call last):
2021-05-05 18:27:41,571 ERROR      File "./hap.py", line 540, in <module>
2021-05-05 18:27:41,573 ERROR        main()
2021-05-05 18:27:41,573 ERROR      File "./hap.py", line 316, in main
2021-05-05 18:27:41,573 ERROR        convert_gvcf_to_vcf=convert_gvcf_truth)
2021-05-05 18:27:41,573 ERROR      File "/u/scratch/m/mdistler/hap.py-build/bin/pre.py", line 125, in preprocess
2021-05-05 18:27:41,576 ERROR        mf = subprocess.check_output("vcfcheck %s --check-bcf-errors 1" % pipes.quote(vcf_input), shell=True)
2021-05-05 18:27:41,576 ERROR      File "/u/local/apps/python/2.7.2/lib/python2.7/subprocess.py", line 544, in check_output
2021-05-05 18:27:41,599 ERROR        raise CalledProcessError(retcode, cmd, output=output)
2021-05-05 18:27:41,600 ERROR    CalledProcessError: Command 'vcfcheck /u/home/n/neharajk/scratch/HG002_GRCh37_1_22_v4.2.1_benchmark_19.vcf --check-bcf-errors 1' returned non-zero exit status 1

Any help?