Trying to achieve midi in to pure data stream

[simmit123456789]

Hi I've been attempting midi in with pure data stream. I have no idea if I'm getting close as I don't have much coding experience. I'm getting stuck with this error-expression list treated as compound expression in initializer [-fpermissive]

code I'm trying below. would be amazing if someone who knows anything could have a look :)
 
#define SAMPLE_RATE 44100
#define HV_HASH_NOTEIN 0x67E37CA3

#include "AudioTools.h"
#include "AudioLibs/I2SCodecStream.h"
#include "Heavy_miditest.hpp"
#include "Heavy_miditest.h"
#include "AudioLibs/PureDataStream.h"
#include "Midi.h"

AudioInfo info(SAMPLE_RATE, 2, 16);
Heavy_miditest pd_miditest(SAMPLE_RATE);
PureDataStream pd(pd_miditest);
I2SCodecStream out(AudioKitEs8388V1);
StreamCopy copier(out, pd);
MidiCallbackAction action;
MidiStreamIn in(Serial, action);

void onNoteOn(uint8_t channel, uint8_t note, uint8_t velocity) {

bool hv_sendMessageToReceiverV(HV_HASH_NOTEIN, 0, "fff",
(float) note, // pitch
(float) velocity, // velocity
(float) channel);
}

void onNoteOff(uint8_t channel, uint8_t note, uint8_t velocity) {

bool hv_sendMessageToReceiverV(HV_HASH_NOTEIN, 0, "fff",
(float) note, // pitch
(float) 0, // velocity
(float) channel);

}

void setup() {

srand(time(NULL));

pd.begin();

auto cfg = out.defaultConfig();
//cfg.sd_active = false;
cfg.copyFrom(info);
out.begin(cfg);

Serial.begin(119200);
action.setCallbacks(onNoteOn, onNoteOff);
}

void loop() {

copier.copy();

if (!in.loop()){
delay(10);
}

}