can't run gateway.py

[Hawkenm]

Config
mqtt:
host: 192.168.2.153
port: 1883
username: test
password: test@123456
#ca_cert: /etc/ssl/certs/ca-certificates.crt # Uncomment to enable MQTT TLS, update path to appropriate location.
#ca_verify: False # Verify TLS certificate chain and host, disable for testing with self-signed certificates, default to True
topic_prefix: hostname # All messages will have that prefix added, remove if you dont need this.
client_id: bt-mqtt-gateway
availability_topic: lwt_topic

manager:
sensor_config:
topic: homeassistant
retain: true
topic_subscription:
update_all:
topic: homeassistant/status
payload: online
command_timeout: 35 # Timeout for worker operations. Can be removed if the default of 35 seconds is sufficient.

workers:

lywsd03mmc_homeassistant:
args:
devices:
bathroom: 00:11:22:33:44:55
topic_prefix: mijasensor_gen2
update_interval: 120
am43:
args:
devices:
upper_hall:
mac: a4:c1:38:6b:54:d2
pin: c19d8156b58038225c31f9a33b3d6412 # Pin code for the device
invert: true # Set to true to make position 100 be open instead of the default of closed
topic_prefix: blinds
per_device_timeout: 40
hass_device_class: blind # Optional; the default will be "shade", see https://www.home-assistant.io/integrations/cover/#device-class for details
iface: 0 # Optional; you can get the list of available interfaces by calling hciconfig
rapid_update_interval: 10 # Optional; if set — the status of the device would be requested automatically after this value of seconds,
# if any activity was detected during the last update (or a command was executed)
default_update_interval: 300 # Optional; used together with rapid_update_interval, should have the same value as update_interval.
# when no changes detected after an update request, and rapid_update_interval is set, the update update_interval
# will be changed to default_update_interval.
topic_subscription: blinds/+/+/+
update_interval: 300

Debug gateway logs
(.venv) root@raspberrypi:/opt/bt-mqtt-gateway# sudo ./gateway.py
Traceback (most recent call last):
File "./gateway.py", line 11, in
import logger
File "/opt/bt-mqtt-gateway/logger.py", line 3, in
import yaml
ModuleNotFoundError: No module named 'yaml'

Server (please complete the following information):

• OS: linux
• Distro: Raspbian
• Version 2021-11-23

[lionhe1966]

Possibly it may be related to #244