NullPointerException: Cannot invoke "net.minecraft.text.Style.getClickEvent()" because "$$0" is null

Seems to affect latest yacl (3.7.1) for mc 1.21.6 and up, fabric and neoforge. 1.21.5 works fine.

This was reported to me here but I think this is a yacl issue.
Here is the user's log:
https://mclo.gs/vkzv1mn

Here's my own log with a minimal mod set and stackdeobfuscator:
https://mclo.gs/tf7PKJs

Happens to me with the latest neo 1.21.1 even if I just hover the other tabs