Unable to connect - error "Unknown error occured"

[lordblc]

Integration stopped communicating back in January and whatever i try to do, i just get that error.

Is there anything i can test to give more detail to this?
Keep in mind i am not a programmer, so detailed instructions are needed. :)

I have checked all connections several times to no avail. i have replaced the usb plug, tried using modbus - tcp adapters.
Currently it's connected to a tcp adapter.

I have changed the modbus address on the inverter to see if that helped, hence the screenshot shows 2.
I have tried deleting the integration, reloading and reconfig, hence the screenshot.

[WouterTuinstra]

Please check: Settings -> System -> Logs If you see any errors regarding this intergration they should be helpfull in identify the problem.