The provided VCF file is malformed. Error during index creation: Input file is not in valid block compressed format., for input source: /home/runner/work/imputationserver-utils/imputationserver-utils/test-data/data/unorderd/minimac_test.50.vcf.gz

Your upload data contains chromosome 'chr20'. This is not a valid hg19 encoding. Please ensure that your input data is build hg19 and chromosome is encoded as '20'.

Skip allele frequency check.

Uploaded data is hg38 and reference is hg19.