local canary="__SECRO_GUARD_CANARY_5EC0A1__"
local ok, err = pcall(function() error(canary, 0) end)
print("ok", ok, type(err), tostring(err))
print("find", string.find(err or "", canary, 1, true))
print("pcall src", debug.info(pcall,"s"))
print("error src", debug.info(error,"s"))