how to solve this error :

I am trying to builed a communication between raspberry pi and Hc05 Bluetooth module. But many cases I am getting host down error and not able to send data properly.

below I have mentioned the error details...

Traceback (most recent call last):
File "<string>", line 3, in connect
_bluetooth.error: (112, 'Host is down')

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "/home/pi/Desktop/Identification/Azure.py", line 148, in <module>
File "/home/pi/Desktop/Identification/Azure.py", line 58, in Blue_send
File "<string>", line 5, in connect
bluetooth.btcommon.BluetoothError: (112, 'Host is down')


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