stallion5632
ngx_http_lua_calc_strlen_in_table(): non-array table found

    lua_pushnil(L); /* stack: table key */
    while (lua_next(L, index) != 0) { /* stack: table key value */
        dd("key type: %s", luaL_typename(L, -2));

        if (lua_type(L, -2) == LUA_TNUMBER) {

            key = lua_tonumber(L, -2);

            dd("key value: %d", (int) key);

            if (floor(key) == key && key >= 1) {
                if (key > max) {
                    max = (int) key;
                }

                lua_pop(L, 1); /* stack: table key */
                continue;
            }
        }

        /* not an array (non positive integer key) */
        lua_pop(L, 2); /* stack: table */

        luaL_argerror(L, arg_i, "non-array table found");
        return 0;
    }