error 'cannot covert [class] to int' in micropython

I was trying to use a function from my own class and it gave me this error:

Traceback (most recent call last):
  File "/home/robot/MyBlocks/main.py", line 134, in <module>
  File "/home/robot/MyBlocks/main.py", line 50, in drive_mm
TypeError: can't convert Generic_Myblocks to int

Exited with error code 1.

Here's my code for the drive function:

def drive_mm(angle, speed, mm, brake=True):
  robot.reset()
  while robot.distance() < mm:
    robot.drive(speed, angle)       <-- the error is this line
  robot.stop()
  if brake == True:
    lm.hold()
    rm.hold()
    return
  else:
    lm.brake()
    rm.brake()

And for the actual program:

# Creates a object using the custom class and runs the drive function off it
    myblocks = Generic_Myblocks(ev3, robot, leftMotor, rightMotor, leftColor, rightColor, infrared)
    myblocks.drive_mm(0, 1000, 100)