I have this code and when I try to send it to the Arduino board I get this error. I included the library after watching a video, but without it I also got this error. Thank you.
Why? Pins 0 and 1 are the hardware serial port and can only provide one function. So either move miBT to two other pins or get rid of the SoftwareSerial and use the hardware serial functionality to communicate with the HC05; you will loose communication with the PC.
@J-M-L, looking at the data in the output window, it's a 328P.