Problems compiling with ArduinoOTA; "'class ArduinoOTAMdnsClass...has no member named ' "

[Technerd]

Hello everyone,
I hope that you can help me. Any ideas are welcome.

I would like to use the ArduinoOTA library with an ESP32.
Unfortunately, I keep getting the same error message.

'class ArduinoOTAMdnsClass<WiFiServer, WiFiClient, WiFiUDP>' has no member named '...'
[...] = all commands are named here (e.g. setHostname)

Unfortunately I don't know what this means.

I also already reinstalled all used libraries and read dozens of forums.
Unfortunately I could not find an answer.

Did you have this problem before or do you have an idea for a solution ?
I am glad about every answer!

PS: the code is the example from the library.

Many greetings
TechNerd19

[Juraj]

you are compiling ESP32 bundled ArduinoOTA example with my generic ArduinoOTA library, not with the ArduinoOTA library bundled with ESP32.
why did you install my ArduinoOTA library? do you want to upload to ESP32 over Ethernet?
do you use Arduino IDE 1.8.14? update to 1.8.15 for correct library priority