Fixed [E][WiFiUdp.cpp:160] endPacket(): could not send data: 22 error

include/WiFiSettings.h

@@ -26,6 +26,7 @@ private:
     IPAddress apIp;
     IPAddress apNetmask;
     std::unique_ptr<DNSServer> dnsServer;
+    bool dnsServerStatus = false;
 };
 
 extern WiFiSettingsClass WiFiSettings;

src/WiFiSettings.cpp

@@ -24,8 +24,10 @@ void WiFiSettingsClass::setupMode()
         WiFi.softAP((const char*)ssidString.c_str(), ACCESS_POINT_PASSWORD);
         dnsServer->setErrorReplyCode(DNSReplyCode::NoError);
         dnsServer->start(DNS_PORT, "*", WiFi.softAPIP());
+        dnsServerStatus = true;
     } else {
         dnsServer->stop();
+        dnsServerStatus = false;
         WiFi.mode(WIFI_STA);
     }
 }
@@ -90,7 +92,9 @@ void WiFiSettingsClass::loop()
             }
         }
     }
+    if (dnsServerStatus) {
         dnsServer->processNextRequest();
+    }
 }
 
 void WiFiSettingsClass::applyConfig()