not_head_member
Form’s head is not in the kind’s (head-set …) whitelist.
Run sjon explain not_head_member to read this at a terminal, browse every code, or work through diagnostics-driven repair if you want the habit rather than the answer.
Form’s head is not in the kind’s (head-set …) whitelist.
Run sjon explain not_head_member to read this at a terminal, browse every code, or work through diagnostics-driven repair if you want the habit rather than the answer.