The output of blessy-GTFtoBEDdf.R have these colnames
chrom, chromStart, chromEnd, name, score, strand,
thickStart, thickEnd, itemRgb, blockCount, blockSizes, blockStarts, geneName
but blessy.usingCustomAnnotation.R check for
tx_required_cols <- c("chrom", "txStart", "txEnd", "strand", "blockCount", "blockSizes", "blockStarts", "geneName")
Maybe change the output of blessy-GTFtoBEDdf.R to include txStart and txEnd