GCDAsyncsocket error

I’m using an ESP8266 standalone. Occasionally, the Blynk app will refuse to connect, and return a “GCDAsyncsocket error.” The problem doesn’t appear to be with the ESP8266, since I can fix it by restarting my iPhone. Force closing the Blynk app, and restarting it doesn’t work. I actually have to do a hard restart on the phone, after which the Blynk app is able to reconnect to the ESP8266. Can anyone tell me what the error means, and if this is a Blynk issue or an iOS issue?

Thanks for reporting. Investigating it.