ERROR in converting gGrange to vcf

I want to add `PARID` into the `INFO` field of an SV vcf file with breakend notation

```R
>     StructuralVariantAnnotation:::breakpointGRangesToVCF(
+         breakpointRanges(
+             VariantAnnotation::readVcf('SV.delly.somatic.vcf'),
+             inferMissingBreakends = TRUE
+         )
+     )
Error: Elements 1, 2, 3, 4, 5, ... of width(gr) == 1 are not true
```