compile error: cannot declare field to be of abstract type

[aster94]

Platform

• Hardware: any but tested on MODE MCU 0.9 (ESP12)
• Core Version: 1.0 from arduino package manager
• Development Env: Arduino IDE
• Operating System: any Windows Ubuntu

Settings in IDE

not relevant

Problem Description

I am writing a library (GoProControl) it works on all boards with wifi, to make HTTP request i use ArduinoHttpClient because it is cross platform. I know that ESP8266 has its own HTTP library but since the API is not the same I can't use it

on ESP32 all works well, could someone help me understand what this error mean and how could it be fixed? It seems to be something related to the virtual definition

here the complete compile log:
https://hastebin.com/bipopeyuhu.sql

any example which include the library GoProControl:

#include <GoProControl.h>
GoProControl gp("a", "b", HERO3);

void setup(){}
void loop(){}

[JAndrassy]

it is this #5749