hello I'm trying to read serial BT string, the basic code is:

While (SerialBT.availible()) {
Character = SerialBT.read();
tmp_bt.concat(Character);
}
If (tmp_bt.equals(string)) {
//Do that
}

string is predetermined text, if returns false, any advice what could go wrong?

Hello I'm using esp32 Devkit v4. the ESP connected to mfrc522 development board (https://robotdyn.com/rfid-reader-writer-nfc-module-mfrc522.html) using VSPI (MISO pin 12, MOSI pin 13, SS pin 15, SCP pin 14). When i'm trying to boot or program the ESP, i get error - "A fatal error occurred: Timed out...