Crash on boot on invalid MQTT configuration? #3704
Description
The Problem
I was following the HA instructions to setup MQTT and I think I messed the MQTT server/ip because all I did was enter it's (local) DNS name (foo.mydomain.bar) and check the two checkmarks shown here. I saved and had it reboot and since then I get:
AI on the Edge Device
We have one or more critical errors:
0x00000004
Please check logs with log viewer and/or [jomjol.github.io/AI-on-the-edge-device-docs/Error-Codes](https://jomjol.github.io/AI-on-the-edge-device-docs/Error-Codes) for more information!Apparently this is a cam bad error. But I'm 99.999% sure the cam is fine because minutes before it did a reading and has been working fine for a long time.
My guess is that the MQTT initialization happens during the cam initialization and the MQTT failing causes it to think the cam initialization failed?
Version
v16.0.0 (Commit: f542d84)
Logfile
[0d00h00m00s] 2025-04-13T20:29:40 <INF> [MAIN] =================================================
[0d00h00m00s] 2025-04-13T20:29:40 <INF> [MAIN] ==================== Start ======================
[0d00h00m00s] 2025-04-13T20:29:40 <INF> [MAIN] =================================================
[0d00h00m00s] 2025-04-13T20:29:40 <INF> [SDCARD] Basic R/W check started...
[0d00h00m00s] 2025-04-13T20:29:40 <INF> [SDCARD] Basic R/W check successful
[0d00h00m00s] 2025-04-13T20:29:41 <INF> [MAIN] PSRAM size: 8388608 byte (8MB / 64MBit)
[0d00h00m00s] 2025-04-13T20:29:41 <INF> [MAIN] Total heap: 4378511 byte
[0d00h00m03s] 2025-04-13T20:29:43 <WRN> [MAIN] Camera init failed (0x105), retrying...
[0d00h00m05s] 2025-04-13T20:29:45 <ERR> [MAIN] Camera init failed (0x105)! Check camera module and/or proper electrical connection
[0d00h00m05s] 2025-04-13T20:29:45 <ERR> [HELPER] New System Status: 0x00000004
[0d00h00m05s] 2025-04-13T20:29:46 <INF> [SNTP] TimeServer: nas.mydomain.bar
[0d00h00m05s] 2025-04-13T20:29:46 <INF> [SNTP] Configuring NTP Client...
[0d00h00m05s] 2025-04-13T22:29:46 <INF> [SNTP] Time zone set to CET-1CEST,M3.5.0,M10.5.0/3
[0d00h00m05s] 2025-04-13T22:29:46 <INF> [SNTP] time zone: +0200 Delta to UTC: 7200 seconds
[0d00h00m05s] 2025-04-13T22:29:46 <INF> [SNTP] Time is already set: 2025-04-13 22:29:46
[0d00h00m05s] 2025-04-13T22:29:46 <INF> [MAIN] CPU frequency: 160 MHz
[0d00h00m05s] 2025-04-13T22:29:46 <INF> [SDCARD] Folder/file presence check started...
[0d00h00m05s] 2025-04-13T22:29:46 <INF> [SDCARD] Folder/file presence check successful
[0d00h00m05s] 2025-04-13T22:29:46 <INF> [MAIN] Tag: 'v16.0.0', Release: v16.0.0 (Commit: f542d84), Date/Time: 2025-03-15 13:28, Web UI: Release: v16.0.0 (Commit: f542d84)
[0d00h00m05s] 2025-04-13T22:29:46 <INF> [MAIN] Reset reason: Via esp_restart
[0d00h00m05s] 2025-04-13T22:29:46 <INF> [WLANINI] SSID: mydomain.bar
[0d00h00m05s] 2025-04-13T22:29:46 <INF> [WLANINI] Password: XXXXXXXX
[0d00h00m05s] 2025-04-13T22:29:46 <INF> [WLANINI] Hostname: watermeter
[0d00h00m05s] 2025-04-13T22:29:46 <INF> [WLANINI] RSSIThreshold: 0
[0d00h00m05s] 2025-04-13T22:29:46 <INF> [MAIN] WLAN config loaded, init WIFI...
[0d00h00m05s] 2025-04-13T22:29:46 <INF> [WIFI] Automatic interface config --> Use DHCP service
[0d00h00m05s] 2025-04-13T22:29:46 <INF> [WIFI] Set hostname to: watermeter
[0d00h00m05s] 2025-04-13T22:29:46 <INF> [WIFI] Init successful
[0d00h00m08s] 2025-04-13T22:29:49 <INF> [WIFI] Connected to: mydomain.bar, RSSI: -58
[0d00h00m09s] 2025-04-13T22:29:50 <INF> [WIFI] Assigned IP: 192.168.7.89
[0d00h00m10s] 2025-04-13T22:29:50 <INF> [SNTP] Time is synced with NTP Server nas.mydomain.bar: 2025-04-13 22:29:50
[0d00h00m12s] 2025-04-13T22:29:52 <INF> [MAIN] Device info: CPU cores: 2, Chip revision: 100
[0d00h00m12s] 2025-04-13T22:29:52 <INF> [MAIN] SD card info: Name: SDU1 , Capacity: 7680MB, Free: 7648MB
[0d00h00m14s] 2025-04-13T22:29:54 <ERR> [MAIN] Initialization failed. Flow task start aborted. Loading reduced web interface...
[0d00h00m14s] 2025-04-13T22:29:55 <ERR> [MAIN SERVER] We have a critical error, not serving main page!
[0d00h00m18s] 2025-04-13T22:29:59 <ERR> [MAIN SERVER] We have a critical error, not serving main page!Expected Behavior
I expect it to boot so I am able to correct my mistake (if any)
Screenshots
No response
Additional Context
Is there a way I can (easily) undo the config changes I made? Because I do have a backup of my last configuration, but I don't see a way to upload it?