[Python] Cannot understand 'Module' object not callable -cannot understand this error in the...

I am working on a python code involving two cameras(flir and logitech camera) and Iam using usb relay to control light for each of the camera and getting this error inside motion_start. Relay 1 turns on but then the error comes. I have attached the code block where error comes. The Led indicator on camera does turn on

def motion_start(self):
check = self.initialize_devices()

if len(self.devices) < 3:
print(len(self.devices))
return None

self.move(Decimal(self.motion_params.x_cam2), Decimal(self.motion_params.y_cam2), Decimal(self.motion_params.z_cam2))

relay_controller = RelayApp()
relay_controller.get_Hid_USBRelay()
relay_controller.open_device()

camera_app = SecondaryCameraApp()
cap = camera_app.initialize_camera()

try:
relay_controller.turn_off_all_relays()
time.sleep(0.5)
relay_controller.turn_on_relay(1)
time.sleep(4) # Wait for 4 seconds

# Capture image using the secondary camera
frame = camera_app.capture_image(cap)
transformed_image = camera_app.apply_perspective_transform(frame)

relay_controller.turn_off_relay(1)
time.sleep(0.5)
relay_controller.turn_on_relay(2)
time.sleep(0.5)
relay_controller.turn_off_relay(2)

self.current_data.set_stop_acquisition(False)

for i in range(self.motion_params.y_steps):
if self.current_data.get_stop_acquisition():
print("Acquisition stopped in y loop.")
break
y_position = Decimal(self.motion_params.y_start + i * self.motion_params.y_increment)
print(f"New y_position: {y_position}")

for j in range(self.motion_params.x_steps):
if self.current_data.get_stop_acquisition():
print("Acquisition stopped in x loop.")
break
x_position = Decimal(self.motion_params.x_start + j * self.motion_params.x_increment)
print(f"New x_position: {x_position}")

if not self.motion_params.optimal_z_movement:
print(f"Calling z_movement_incremental for x: {x_position}, y: {y_position}")
self.z_movement_incremental(x_position, y_position, j)
else:
print(f"Calling z_movement_optimal for x: {x_position}, y: {y_position}")
self.z_movement_optimal(x_position, y_position, j)

if j == 0:
self.current_data.set_row_start_z(self.current_data.get_best_z())
print(f"Set row start z to: {self.current_data.get_best_z()}")

print("Homing")
self.move(Decimal(0.1), Decimal(0.1), Decimal(0.1))
print("Homing completed")

time.sleep(0.1)
self.update_positions()

except Exception as e:
print(f"Error during relay or camera control: {e}")
return None

finally:
cap.release() # Ensure the camera is released
relay_controller.close_device() # Ensure the relay device is closed



I had isolated the two classes SecondaryCameraApp and RelayApp in a separate python file with a Controller class then the code runs fine

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