10:16:51.071 [INFO ] [o.transport.mqtt.MqttBrokerConnection] - Starting MQTT broker connection to 'mqtt.lan' with clientid db3212f8-cd0a-41d7-8aa7-597946ea9e7a
10:16:51.080 [TRACE] [ng.mqtt.handler.AbstractBrokerHandler] - Subscribed org.openhab.binding.mqtt.homeassistant.internal.discovery.HomeAssistantDiscovery@2ab0c6fe to discovery topic homeassistant/# on broker mqtt:broker:mosquitto
10:16:51.080 [TRACE] [ng.mqtt.handler.AbstractBrokerHandler] - Subscribed org.openhab.binding.mqtt.espmilighthub.internal.discovery.EspMilightHubDiscoveryService@4f062e62 to discovery topic milight/states/# on broker mqtt:broker:mosquitto
10:16:51.081 [TRACE] [ng.mqtt.handler.AbstractBrokerHandler] - Subscribed org.openhab.binding.mqtt.homie.internal.discovery.Homie300Discovery@6ba89a3b to discovery topic +/+/$homie on broker mqtt:broker:mosquitto
10:16:51.093 [INFO ] [ig.discovery.internal.PersistentInbox] - Added new thing 'mqtt:rgbw:mosquitto:0xB58D2' to inbox.
10:16:51.093 [INFO ] [openhab.event.InboxAddedEvent ] - Discovery Result with UID 'mqtt:rgbw:mosquitto:0xB58D2' has been added.
10:16:51.096 [INFO ] [ig.discovery.internal.PersistentInbox] - Added new thing 'mqtt:rgbw:mosquitto:0xB58D3' to inbox.
10:16:51.098 [INFO ] [ig.discovery.internal.PersistentInbox] - Added new thing 'mqtt:homie300:mosquitto:relais' to inbox.
10:16:51.098 [INFO ] [openhab.event.InboxAddedEvent ] - Discovery Result with UID 'mqtt:rgbw:mosquitto:0xB58D3' has been added.
10:16:51.099 [INFO ] [hab.event.ThingStatusInfoChangedEvent] - Thing 'mqtt:broker:mosquitto' changed from OFFLINE to ONLINE
10:16:51.100 [INFO ] [openhab.event.InboxAddedEvent ] - Discovery Result with UID 'mqtt:homie300:mosquitto:relais' has been added.
10:16:51.099 [INFO ] [ig.discovery.internal.PersistentInbox] - Added new thing 'mqtt:homie300:mosquitto:mcz' to inbox.
10:16:51.101 [INFO ] [openhab.event.InboxAddedEvent ] - Discovery Result with UID 'mqtt:homie300:mosquitto:mcz' has been added.
10:16:51.101 [INFO ] [ig.discovery.internal.PersistentInbox] - Added new thing 'mqtt:rgbw:mosquitto:0xB58D1' to inbox.
10:16:51.101 [INFO ] [openhab.event.InboxAddedEvent ] - Discovery Result with UID 'mqtt:rgbw:mosquitto:0xB58D1' has been added.
10:16:51.102 [INFO ] [ig.discovery.internal.PersistentInbox] - Added new thing 'mqtt:rgbw:mosquitto:0xB58D4' to inbox.
10:16:51.102 [INFO ] [openhab.event.InboxAddedEvent ] - Discovery Result with UID 'mqtt:rgbw:mosquitto:0xB58D4' has been added.
10:16:51.102 [INFO ] [ig.discovery.internal.PersistentInbox] - Added new thing 'mqtt:rgb_cct:mosquitto:0xB58D3' to inbox.
10:16:51.103 [INFO ] [openhab.event.InboxAddedEvent ] - Discovery Result with UID 'mqtt:rgb_cct:mosquitto:0xB58D3' has been added.
10:16:51.104 [INFO ] [ig.discovery.internal.PersistentInbox] - Added new thing 'mqtt:rgb_cct:mosquitto:0xB58D1' to inbox.
10:16:51.104 [INFO ] [openhab.event.InboxAddedEvent ] - Discovery Result with UID 'mqtt:rgb_cct:mosquitto:0xB58D1' has been added.
10:16:51.105 [INFO ] [ig.discovery.internal.PersistentInbox] - Added new thing 'mqtt:rgb_cct:mosquitto:0xB58D2' to inbox.
10:16:51.106 [INFO ] [openhab.event.InboxAddedEvent ] - Discovery Result with UID 'mqtt:rgb_cct:mosquitto:0xB58D2' has been added.
10:16:51.106 [INFO ] [ig.discovery.internal.PersistentInbox] - Added new thing 'mqtt:rgb_cct:mosquitto:0xB58D4' to inbox.
10:16:51.107 [INFO ] [openhab.event.InboxAddedEvent ] - Discovery Result with UID 'mqtt:rgb_cct:mosquitto:0xB58D4' has been added.
10:16:51.107 [INFO ] [ig.discovery.internal.PersistentInbox] - Added new thing 'mqtt:rgb_cct:mosquitto:0x12BD1' to inbox.
10:16:51.108 [INFO ] [openhab.event.InboxAddedEvent ] - Discovery Result with UID 'mqtt:rgb_cct:mosquitto:0x12BD1' has been added.
10:16:51.109 [INFO ] [ig.discovery.internal.PersistentInbox] - Added new thing 'mqtt:rgb_cct:mosquitto:0x12BD2' to inbox.
10:16:51.109 [INFO ] [openhab.event.InboxAddedEvent ] - Discovery Result with UID 'mqtt:rgb_cct:mosquitto:0x12BD2' has been added.
10:16:51.110 [INFO ] [ig.discovery.internal.PersistentInbox] - Added new thing 'mqtt:rgb_cct:mosquitto:0x12BD3' to inbox.
10:16:51.110 [INFO ] [openhab.event.InboxAddedEvent ] - Discovery Result with UID 'mqtt:rgb_cct:mosquitto:0x12BD3' has been added.
10:16:51.111 [INFO ] [ig.discovery.internal.PersistentInbox] - Added new thing 'mqtt:rgb_cct:mosquitto:0x12BD4' to inbox.
10:16:51.111 [INFO ] [openhab.event.InboxAddedEvent ] - Discovery Result with UID 'mqtt:rgb_cct:mosquitto:0x12BD4' has been added.
10:16:51.112 [INFO ] [ig.discovery.internal.PersistentInbox] - Added new thing 'mqtt:rgbw:mosquitto:0x12BD4' to inbox.
10:16:51.112 [INFO ] [openhab.event.InboxAddedEvent ] - Discovery Result with UID 'mqtt:rgbw:mosquitto:0x12BD4' has been added.
10:16:51.113 [INFO ] [openhab.event.InboxAddedEvent ] - Discovery Result with UID 'mqtt:rgbw:mosquitto:0x12BD2' has been added.
10:16:51.112 [INFO ] [ig.discovery.internal.PersistentInbox] - Added new thing 'mqtt:rgbw:mosquitto:0x12BD2' to inbox.
10:16:51.114 [INFO ] [ig.discovery.internal.PersistentInbox] - Added new thing 'mqtt:rgbw:mosquitto:0x12BD1' to inbox.
10:16:51.114 [INFO ] [openhab.event.InboxAddedEvent ] - Discovery Result with UID 'mqtt:rgbw:mosquitto:0x12BD1' has been added.
10:16:51.115 [INFO ] [ig.discovery.internal.PersistentInbox] - Added new thing 'mqtt:rgbw:mosquitto:0x12BD3' to inbox.
10:16:51.115 [INFO ] [openhab.event.InboxAddedEvent ] - Discovery Result with UID 'mqtt:rgbw:mosquitto:0x12BD3' has been added.
10:16:51.116 [INFO ] [ig.discovery.internal.PersistentInbox] - Added new thing 'mqtt:rgb_cct:mosquitto:0x15151' to inbox.
10:16:51.116 [INFO ] [openhab.event.InboxAddedEvent ] - Discovery Result with UID 'mqtt:rgb_cct:mosquitto:0x15151' has been added.
10:17:28.998 [INFO ] [openhab.event.InboxRemovedEvent ] - Discovery Result with UID 'mqtt:rgbw:mosquitto:0xB58D2' has been removed.
10:17:28.999 [INFO ] [hab.event.ThingStatusInfoChangedEvent] - Thing 'mqtt:rgbw:mosquitto:0xB58D2' changed from UNINITIALIZED to INITIALIZING
11:02:09.312 [TRACE] [c.MqttChannelStateDescriptionProvider] - Providing state description for channel mqtt:rgbw:mosquitto:0xB58D2:colour
11:02:09.313 [TRACE] [c.MqttChannelStateDescriptionProvider] - Providing state description for channel mqtt:rgbw:mosquitto:0xB58D2:colour
11:02:09.313 [TRACE] [c.MqttChannelStateDescriptionProvider] - Providing state description for channel mqtt:rgbw:mosquitto:0xB58D2:colour
11:02:09.413 [TRACE] [c.MqttChannelStateDescriptionProvider] - Providing state description for channel mqtt:rgbw:mosquitto:0xB58D2:colour
It is also why it does not show up in an installed binding list as it is actually seen as the mqtt binding.
If you have troubles, try uninstalling the mqtt binding and reinstalling it.
I have narrowed it down to the call getBridgeUID() is returning null for some reason.
EDIT: @furax54 I have a possible fix which is working for me here. Download and extract the jar to your addons folder, then you MUST reboot openHAB for it to connect and come online.