我的代码有什么问题？
$rs_drcus = mysqli_query($con,"CALL sp_cons_dr_cusfsp('" .$main_appkey. "')");
while ($rw_drcus = mysqli_fetch_assoc($rs_drcus)) {
$arr_drcus[] = $rw_drcus;
}
它给了我这个错误
Warning: mysqli_fetch_assoc() expects parameter 1 to be mysqli_result, boolean given