.xref not working

[TRk0846]

[18:08] (@trk): .xref john 1 1
[18:09] (@trk): .xref mark 14 72

[kiwiheretic]

The cross references may have originated from https://www.openbible.info/labs/cross-references/
I didn't come up with the file myself so it must have been from a third party source and from a very casual examination it looks like it may have been the original source. I may be able to redownload it from there.