MQTT No Longer Connects after upgrade to v5.1.0_modified

[jeremyakers]

OpenEVSE is refusing to connect to my MQTT broker even after powering down and restarting the unit:

And yet I can connect from my local PC on the same network just fine:

$ mosquitto_sub -h 192.168.0.88 -u solar -P <password> -v -t 'gp2/goplug/1/#'
gp2/goplug/1//override {"state":"null"}
gp2/goplug/1//claim {"state":"null"}
gp2/goplug/1//schedule []
gp2/goplug/1//limit {"type":"none","value":0,"auto_release":true}
gp2/goplug/1//config {"mqtt_supported_protocols":["mqtt","mqtts"],"http_supported_protocols":["http"],"buildenv":"openevse_wifi_v1","version":"v5.0.2","wifi_serial":"B0A732FDCF04","protocol":"-","espinfo":"ESP32r3 2 core WiFi BLE BT","espflash":16777216,"firmware":"8.2.2","evse_serial":"M06SBEFF0B787B","diode_check":true,"gfci_check":true,"ground_check":true,"relay_check":true,"vent_check":true,"temp_check":true,"max_current_soft":40,"service":2,"scale":220,"offset":0,"min_current_hard":6,"max_current_hard":80,"ssid":"dlink-4D70","pass":"_DUMMY_PASSWORD","ap_ssid":"","ap_pass":"","lang":"","www_username":"","www_password":"","hostname":"openevse-cf04","sntp_hostname":"pool.ntp.org","time_zone":"America/Chicago|CST6CDT,M3.2.0,M11.1.0","limit_default_type":"","limit_default_value":0,"emoncms_server":"https://data.openevse.com/emoncms","emoncms_node":"","emoncms_apikey":"","emoncms_fingerprint":"","mqtt_server":" 192.168.0.88","mqtt_port":1883,"mqtt_topic":"gp2/goplug/1/","mqtt_user":"solar","mqtt_pass":"_DUMMY_PASSWORD","mqtt_solar":"gp2/goplug/1/chrgpwr/state","mqtt_grid_ie":"emon/emonpi/power1","mqtt_vrms":"","mqtt_live_pwr":"","mqtt_vehicle_soc":"","mqtt_vehicle_range":"","mqtt_vehicle_eta":"","mqtt_announce_topic":"openevse/announce/cf04","ocpp_server":"","ocpp_chargeBoxId":"","ocpp_authkey":"","ocpp_idtag":"DefaultIdTag","ohm":"","divert_type":0,"divert_PV_ratio":1.1,"divert_attack_smoothing_time":20,"divert_decay_smoothing_time":20,"divert_min_charge_time":600,"current_shaper_max_pwr":0,"current_shaper_smoothing_time":60,"current_shaper_min_pause_time":300,"current_shaper_data_maxinterval":120,"vehicle_data_src":0,"tesla_access_token":"","tesla_refresh_token":"","tesla_created_at":18446744073709551615,"tesla_expires_in":18446744073709551615,"tesla_vehicle_id":"","rfid_storage":"","led_brightness":128,"scheduler_start_window":600,"flags":115344906,"emoncms_enabled":false,"mqtt_enabled":true,"mqtt_reject_unauthorized":true,"mqtt_retained":false,"ohm_enabled":false,"sntp_enabled":true,"tesla_enabled":false,"divert_enabled":true,"current_shaper_enabled":false,"pause_uses_disabled":false,"mqtt_vehicle_range_miles":false,"ocpp_enabled":false,"ocpp_auth_auto":true,"ocpp_auth_offline":true,"ocpp_suspend_evse":false,"ocpp_energize_plug":false,"rfid_enabled":false,"factory_write_lock":true,"is_threephase":false,"wizard_passed":true,"default_state":true,"mqtt_protocol":"mqtt","charge_mode":"eco"}
gp2/goplug/1//config_version 1
gp2/goplug/1/chrgpwr/state 7957.5
gp2/goplug/1/chrgpwr/state 7957.5
gp2/goplug/1/chrgpwr/state 7957.5
gp2/goplug/1/chrgpwr/state 7957.5
gp2/goplug/1/chrgpwr/state 7957.5
gp2/goplug/1/chrgpwr/state 7955.0
gp2/goplug/1/chrgpwr/state 7955.0
gp2/goplug/1/chrgpwr/state 7955.0
gp2/goplug/1/chrgpwr/state 7955.0
gp2/goplug/1/chrgpwr/state 7955.0
gp2/goplug/1/chrgpwr/state 7955.0

I have tried disabling and re-enabling MQTT and self production, restarting the unit, etc. Nothing seems to work.

[jeremyakers]

I tried reverting back to 5.0.2 but the problem still persists, so it may not be due to the upgrade after all. But the MQTT broker is clearly working as I can connect to and see the charge power state updates coming through just fine. Nothing has changed aside from me doing that upgrade. This just suddenly stopped working (again).

[zerodur12]

may be the MQTT problem is relate to the bug see "Let's Encrypt CA is out of date" #806 if yes the workaround is to accept self-signed certificates

[jeremyakers]

I do not have SSL enabled on my MQTT broker as it runs on my local network.

This issue eventually just went away on it's own. Several days later the EVSE finally successfully connected to the MQTT broker.

[njh]

I think I also just experienced this. Pressing the 'Restart' button OpenEVSE Wifi in the Firmware settings fixed it.
I have an ESP32 Ethernet connection and running Wifi Firmware version v5.0.2.