Mod still seems to load but is throwing two errors in the logs.

$texture is not valid resource location
v_slab_compat:models/block/vertical_slab_template.json
https://mclo.gs/2gzI0Lc

non [a-z0-9/._-] character in path of location: minecraft:$v_slab
model v_slab_compat:models/item/vertical_slab_template.json
https://mclo.gs/Xy75Qux