attempt to yield across C-call boundary

[frankgreco]

I'm not sure if the error lies here or with resty but I get this error when using resty.

$ resty -lluacov <file>
ERROR: attempt to yield across C-call boundary
stack traceback:
        ...ew/Cellar/luarocks/3.9.2/share/lua/5.4/luacov/runner.lua:429: in function 'has_hook_per_thread'
        ...ew/Cellar/luarocks/3.9.2/share/lua/5.4/luacov/runner.lua:475: in function 'init'
        .../homebrew/Cellar/luarocks/3.9.2/share/lua/5.4/luacov.lua:7: in main chunk
        [C]: in function 'require'
        (command line -e):1: in function 'inline_gen'
        init_worker_by_lua(nginx.conf:162):48: in function <init_worker_by_lua(nginx.conf:162):47>
        [C]: in function 'xpcall'