[Bug]: Shelly 3EM Pro "Unable to get mqttprefix of client"

[andiweli]

I'm sure that

• This issue is still present in the current beta version of this adapter
• There is no other (open) issue with the same topic (use the search!)
• This issue is not described in the adapter documentation / FAQ (read the docs!)

Shelly device

Shelly 3EM Pro

Shelly firmware version

20240822-121054/1.4.3-g143ff62

Protocol

MQTT

The problem

Permanent log errors from my Shelly Pro 3EM.
I have two adapters running, instance "shelly.0" connects to my Shelly Plug S, instance "shelly.1" connects with my Shelly Pro 3EM (via MQTT).

It mostly works, but every now and then I get this issue every few minutes all day long... 100 errors or more.
Adapter reconnects all the time.

Shelly Plugs and 3EM have fixed IPs.
Plugs and 3EM are available via IP and frontend.

iobroker.current.log (in debug mode!)

2024-09-14 15:28:44.887 - error: shelly.1 (1393) [MQTT] Error in function setMqttPrefixHttp (Gen 1) for (undefined / undefined / undefined): TypeError: Cannot read properties of undefined (reading 'replace')
2024-09-14 15:28:44.888 - error: shelly.1 (1393) [MQTT] Unable to get mqttprefix of client with id "shellypro3em-34987a453838"
2024-09-14 15:28:45.336 - info: host.RasPi-SmartHome stopInstance system.adapter.homekit-controller.0 (force=false, process=true)
2024-09-14 15:28:45.428 - info: host.RasPi-SmartHome stopInstance system.adapter.homekit-controller.0 send kill signal
2024-09-14 15:28:45.995 - info: host.RasPi-SmartHome instance system.adapter.homekit-controller.0 terminated with code 11 (ADAPTER_REQUESTED_TERMINATION)
2024-09-14 15:28:47.097 - info: host.RasPi-SmartHome stopInstance system.adapter.shelly.1 (force=false, process=true)
2024-09-14 15:28:47.158 - info: host.RasPi-SmartHome stopInstance system.adapter.shelly.1 send kill signal
2024-09-14 15:28:47.729 - info: host.RasPi-SmartHome instance system.adapter.shelly.1 terminated with code 11 (ADAPTER_REQUESTED_TERMINATION)
2024-09-14 15:28:49.494 - info: host.RasPi-SmartHome instance system.adapter.homekit-controller.0 in version "0.5.10" (non-npm: Apollon77/ioBroker.homekit-controller) started with pid 57061
2024-09-14 15:28:51.612 - info: host.RasPi-SmartHome instance system.adapter.shelly.1 in version "8.1.1" (non-npm: iobroker-community-adapters/ioBroker.shelly#5c4bb3f94b74cd744e51a7e230b317ab21c99039) started with pid 57073
2024-09-14 15:29:10.441 - error: shelly.1 (57073) [MQTT] Error in function setMqttPrefixHttp (Gen 1) for (undefined / undefined / undefined): TypeError: Cannot read properties of undefined (reading 'replace')
2024-09-14 15:29:10.444 - error: shelly.1 (57073) [MQTT] Unable to get mqttprefix of client with id "shellypro3em-34987a453838"
2024-09-14 15:29:42.984 - error: shelly.1 (57073) [MQTT] Error in function setMqttPrefixHttp (Gen 1) for (undefined / undefined / undefined): TypeError: Cannot read properties of undefined (reading 'replace')
2024-09-14 15:29:42.987 - error: shelly.1 (57073) [MQTT] Unable to get mqttprefix of client with id "shellypro3em-34987a453838"
2024-09-14 15:30:22.874 - error: shelly.1 (57073) [MQTT] Error in function setMqttPrefixHttp (Gen 1) for (undefined / undefined / undefined): TypeError: Cannot read properties of undefined (reading 'replace')
2024-09-14 15:30:22.875 - error: shelly.1 (57073) [MQTT] Unable to get mqttprefix of client with id "shellypro3em-34987a453838"
2024-09-14 15:31:31.689 - error: shelly.1 (57073) [MQTT] Error in function setMqttPrefixHttp (Gen 1) for (undefined / undefined / undefined): TypeError: Cannot read properties of undefined (reading 'replace')
2024-09-14 15:31:31.690 - error: shelly.1 (57073) [MQTT] Unable to get mqttprefix of client with id "shellypro3em-34987a453838"
2024-09-14 15:41:27.339 - error: shelly.1 (57073) [MQTT] Error in function setMqttPrefixHttp (Gen 1) for (undefined / undefined / undefined): TypeError: Cannot read properties of undefined (reading 'replace')
2024-09-14 15:41:27.340 - error: shelly.1 (57073) [MQTT] Unable to get mqttprefix of client with id "shellypro3em-34987a453838"
2024-09-14 15:41:50.451 - error: shelly.1 (57073) [MQTT] Error in function setMqttPrefixHttp (Gen 1) for (undefined / undefined / undefined): TypeError: Cannot read properties of undefined (reading 'replace')
2024-09-14 15:41:50.452 - error: shelly.1 (57073) [MQTT] Unable to get mqttprefix of client with id "shellypro3em-34987a453838"

Version of nodejs

20.17.0

Version of ioBroker js-controller

6.0.11

Version of adapter

8.1.1

[github-actions]

Thanks for reporting a new issue @andiweli!

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2. Please attach all necessary log files (in debug mode!), screenshots and other information to reproduce this issue
3. Search for the issue topic in other/closed issues to avoid duplicates!

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