AudioEngine::getVolume-->The audio instance 0 is non-existent

AudioEngine::getVolume-->The audio instance 0 is non-existent
0

Hi!.
I’m currently using Lubuntu 19, installed everything and all is ok thanks to Slack help, The HelloWorld from Cocos2dx worked fine, no warnings, no errors, sample was showed on screen, that’s good…

Now, i have translated all my code made in Windows into Linux… then tried to run and there is an error:

/usr/bin/ld: ../../cocos2d/external/linux-specific/fmod/prebuilt/64-bit/libfmod.so: .dynsym local symbol at index 2 (>= sh_info of 2)

but this error does not stopped the execution so i put to continue, and game showed up… with no sound.

the Application Output says:

AudioEngine::getVolume-->The audio instance 0 is non-existent

What could it be?
Thanks.