Fix ERR_STREAM_WRITE_AFTER_END when errored

server/http.js

@@ -192,8 +192,10 @@ module.exports.start = function () {
                         'Content-Type': "text/plain",
                         'Set-Cookie': '__mpws_request=' + year + month + day + hour + min + sec
                     });
-                    res.write(e.stack);
-                    res.end();
+                    try {
+                        res.write(e.stack);
+                        res.end();
+                    } catch (e) {}
                 }
                 return;
             } else {