C++: no suitable conversion function from "lambda []()->void" to "void (*)()" exists

I need to pass variables to a lamda expression inside a method. To do this I'm using the & operator in the capture list.

(I'm using the AppleMIDI library.)

// MIDIService.h

#ifndef MIDIService_h
#define MIDIService_h

#include <AppleMIDI.h>

// ...

class MIDIService {
   public:
    MIDIService();

    void setup(const uint8_t midiOnValue,
               // ...
               void (*onConnected)());

   // ...

};

#endif

// MIDIService.cpp

#include "MIDIService.h"


MIDIService::MIDIService() {}

void MIDIService::setup(const uint8_t midiOnValue,
                        // ...
                        void (*onConnected)()) {

    // ...

    // AppleMIDI.setHandleConnected is from the AppleMIDI library.
    AppleMIDI.setHandleConnected([&](const APPLEMIDI_NAMESPACE::ssrc_t& ssrc, const char* name) { // ERROR!
        onConnected();
    });
    
    // ...

    // MIDI.setHandleControlChange is from the AppleMIDI library.
    MIDI.setHandleControlChange([&](byte channel, byte number, byte value) { // ERROR!
        if (value == midiOnValue) {
            // ...
        } else {
            // ...
        }
    });
}

But VSCode spits out:

no suitable conversion function from "lambda [](const appleMidi::ssrc_t &ssrc, const char *name)->void" to "void (*)(const appleMidi::ssrc_t &, const char *)" exists

and

no suitable conversion function from "lambda [](byte channel, byte number, byte value)->void" to "midi::ControlChangeCallback" exists

I researched about this error but couldn't find a solution that worked for me. Being a C++ newbie I also had trouble understanding half of them.