Random 404s in webinterface / Logs: "Failed to stat file"

[gauner1986]

The Problem

While updating configuration or just accessing random pages of the webinterface i keep getting 404s. Configuration or reference images are not loading.
I noticed and inconsistency while accessing the sdcard. Sometimes the path used is /sdcard and sometimes a part of my ip address gets appended so it becomes /sdcard168.4.125. This doesn't seem right to me.
The sd card is from Verbatim and seems fine to me. Tried reflashing the esp and reformatting the sdcard according to the docs. Didn't help.

Version

Release: v16.0.0 (Commit: f542d84)

Logfile

[0d00h00m00s] 2025-08-20T09:08:16 <INF> [MAIN] =================================================
[0d00h00m00s] 2025-08-20T09:08:16 <INF> [MAIN] ==================== Start ======================
[0d00h00m00s] 2025-08-20T09:08:16 <INF> [MAIN] =================================================
[0d00h00m00s] 2025-08-20T09:08:16 <INF> [SDCARD] Basic R/W check started...
[0d00h00m00s] 2025-08-20T09:08:16 <INF> [SDCARD] Basic R/W check successful
[0d00h00m00s] 2025-08-20T09:08:16 <INF> [MAIN] PSRAM size: 8388608 byte (8MB / 64MBit)
[0d00h00m00s] 2025-08-20T09:08:16 <INF> [MAIN] Total heap: 4378411 byte
[0d00h00m03s] 2025-08-20T09:08:19 <INF> [MAIN] Camera info: PID: 0x26, VER: 0x42, MIDL: 0x7f, MIDH: 0xa2
[0d00h00m03s] 2025-08-20T09:08:19 <INF> [SNTP] TimeServer not defined, using default: pool.ntp.org
[0d00h00m03s] 2025-08-20T09:08:19 <INF> [SNTP] Configuring NTP Client...
[0d00h00m03s] 2025-08-20T11:08:19 <INF> [SNTP] Time zone set to CET-1CEST,M3.5.0,M10.5.0/3
[0d00h00m03s] 2025-08-20T11:08:19 <INF> [SNTP] time zone: +0200 Delta to UTC: 7200 seconds
[0d00h00m03s] 2025-08-20T11:08:19 <INF> [SNTP] Time is already set: 2025-08-20 11:08:19
[0d00h00m03s] 2025-08-20T11:08:19 <INF> [MAIN] CPU frequency: 160 MHz
[0d00h00m03s] 2025-08-20T11:08:19 <INF> [SDCARD] Folder/file presence check started...
[0d00h00m03s] 2025-08-20T11:08:19 <INF> [SDCARD] Folder/file presence check successful
[0d00h00m03s] 2025-08-20T11:08:19 <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)
[0d00h00m03s] 2025-08-20T11:08:19 <INF> [MAIN] Reset reason: Via esp_restart
[0d00h00m03s] 2025-08-20T11:08:19 <INF> [WLANINI] SSID: SSID
[0d00h00m03s] 2025-08-20T11:08:19 <INF> [WLANINI] Password: XXXXXXXX
[0d00h00m03s] 2025-08-20T11:08:19 <INF> [WLANINI] RSSIThreshold: -75
[0d00h00m03s] 2025-08-20T11:08:19 <INF> [MAIN] WLAN config loaded, init WIFI...
[0d00h00m03s] 2025-08-20T11:08:19 <INF> [WIFI] Automatic interface config --> Use DHCP service
[0d00h00m03s] 2025-08-20T11:08:19 <INF> [WIFI] Set hostname to: watermeter
[0d00h00m03s] 2025-08-20T11:08:19 <INF> [WIFI] Init successful
[0d00h00m06s] 2025-08-20T11:08:22 <INF> [WIFI] Connected to: SSID, RSSI: -35
[0d00h00m07s] 2025-08-20T11:08:23 <INF> [WIFI] Assigned IP: 192.168.4.125
[0d00h00m07s] 2025-08-20T11:08:23 <INF> [SNTP] Time is synced with NTP Server pool.ntp.org: 2025-08-20 11:08:23
[0d00h00m09s] 2025-08-20T11:08:25 <INF> [MAIN] Device info: CPU cores: 2, Chip revision: 301
[0d00h00m09s] 2025-08-20T11:08:25 <INF> [MAIN] SD card info: Name: MSSD0, Capacity: 14950MB, Free: 14928MB
[0d00h00m11s] 2025-08-20T11:08:27 <INF> [MAIN] Initialization completed successfully
[0d00h00m13s] 2025-08-20T11:08:29 <INF> [TFLITE] Trying to load the model. If it crashes here, it ist most likely due to a corrupted model!
[0d00h00m13s] 2025-08-20T11:08:30 <INF> [LOGFILE] Set log level to ERROR
[0d00h01m05s] 2025-08-20T11:09:21 <ERR> [OTA FILE] Failed to stat file: /sdcard168.4.125/fileserver/config/config.ini!
[0d00h01m05s] 2025-08-20T11:09:21 <ERR> [OTA FILE] Failed to stat file: /sdcard168.4.125/fileserver/config/reference.jpg!
[0d00h01m35s] 2025-08-20T11:09:51 <ERR> [POSTPROC] main: Raw: 99546.443, Value: , Status: Rate too high - Read: 99546.443 - Pre: 151.469 - Rate: 99394.974
[0d00h01m45s] 2025-08-20T11:10:01 <ERR> [OTA FILE] Failed to stat dir: /sdcard168.4.125/fileserver/!
[0d00h01m54s] 2025-08-20T11:10:10 <ERR> [OTA FILE] Failed to stat dir: /sdcard168.4.125/fileserver/config/!
[0d00h02m00s] 2025-08-20T11:10:16 <ERR> [OTA FILE] Failed to stat dir: /sdcard168.4.125/fileserver/demo/!
[0d00h02m02s] 2025-08-20T11:10:18 <ERR> [OTA FILE] Failed to stat file: /sdcard/demo/index.html!
[0d00h02m07s] 2025-08-20T11:10:23 <ERR> [OTA FILE] Failed to stat dir: /sdcard168.4.125/fileserver/demo/!
[0d00h02m15s] 2025-08-20T11:10:31 <ERR> [OTA FILE] Failed to stat file: /sdcard168.4.125/fileserver/config/prevalue.ini!
[0d00h02m28s] 2025-08-20T11:10:44 <ERR> [OTA FILE] Failed to stat file: /sdcard168.4.125/fileserver/config/align.txt!
[0d00h02m46s] 2025-08-20T11:11:02 <ERR> [OTA FILE] Failed to stat file: /sdcard168.4.125/fileserver/config/config.ini!




[0d00h00m00s] 2025-08-20T08:21:29 <INF> [MAIN] =================================================
[0d00h00m00s] 2025-08-20T08:21:30 <INF> [MAIN] ==================== Start ======================
[0d00h00m00s] 2025-08-20T08:21:30 <INF> [MAIN] =================================================
[0d00h00m00s] 2025-08-20T08:21:30 <INF> [SDCARD] Basic R/W check started...
[0d00h00m00s] 2025-08-20T08:21:30 <INF> [SDCARD] Basic R/W check successful
[0d00h00m00s] 2025-08-20T08:21:30 <INF> [MAIN] PSRAM size: 8388608 byte (8MB / 64MBit)
[0d00h00m00s] 2025-08-20T08:21:30 <INF> [MAIN] Total heap: 4378411 byte
[0d00h00m03s] 2025-08-20T08:21:32 <INF> [MAIN] Camera info: PID: 0x26, VER: 0x42, MIDL: 0x7f, MIDH: 0xa2
[0d00h00m03s] 2025-08-20T08:21:33 <INF> [SNTP] TimeServer not defined, using default: pool.ntp.org
[0d00h00m03s] 2025-08-20T08:21:33 <INF> [SNTP] Configuring NTP Client...
[0d00h00m03s] 2025-08-20T10:21:33 <INF> [SNTP] Time zone set to CET-1CEST,M3.5.0,M10.5.0/3
[0d00h00m03s] 2025-08-20T10:21:33 <INF> [SNTP] time zone: +0200 Delta to UTC: 7200 seconds
[0d00h00m03s] 2025-08-20T10:21:33 <INF> [SNTP] Time is already set: 2025-08-20 10:21:33
[0d00h00m03s] 2025-08-20T10:21:33 <INF> [MAIN] CPU frequency: 160 MHz
[0d00h00m03s] 2025-08-20T10:21:33 <INF> [SDCARD] Folder/file presence check started...
[0d00h00m03s] 2025-08-20T10:21:33 <INF> [SDCARD] Folder/file presence check successful
[0d00h00m03s] 2025-08-20T10:21:33 <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)
[0d00h00m03s] 2025-08-20T10:21:33 <INF> [MAIN] Reset reason: Via esp_restart
[0d00h00m03s] 2025-08-20T10:21:33 <INF> [WLANINI] SSID: Schaefchen 2G
[0d00h00m03s] 2025-08-20T10:21:33 <INF> [WLANINI] Password: XXXXXXXX
[0d00h00m03s] 2025-08-20T10:21:33 <INF> [WLANINI] RSSIThreshold: -75
[0d00h00m03s] 2025-08-20T10:21:33 <INF> [MAIN] WLAN config loaded, init WIFI...
[0d00h00m03s] 2025-08-20T10:21:33 <INF> [WIFI] Automatic interface config --> Use DHCP service
[0d00h00m03s] 2025-08-20T10:21:33 <INF> [WIFI] Set hostname to: watermeter
[0d00h00m03s] 2025-08-20T10:21:33 <INF> [WIFI] Init successful
[0d00h00m06s] 2025-08-20T10:21:36 <INF> [WIFI] Connected to: Schaefchen 2G, RSSI: -33
[0d00h00m18s] 2025-08-20T10:21:48 <INF> [WIFI] Assigned IP: 192.168.4.125
[0d00h00m23s] 2025-08-20T10:21:53 <INF> [MAIN] Device info: CPU cores: 2, Chip revision: 301
[0d00h00m23s] 2025-08-20T10:21:53 <INF> [MAIN] SD card info: Name: MSSD0, Capacity: 14950MB, Free: 14929MB
[0d00h00m25s] 2025-08-20T10:21:55 <INF> [MAIN] Initialization completed successfully
[0d00h00m28s] 2025-08-20T10:21:57 <INF> [TFLITE] Trying to load the model. If it crashes here, it ist most likely due to a corrupted model!
[0d00h00m28s] 2025-08-20T10:21:58 <INF> [LOGFILE] Set log level to ERROR
[0d00h01m57s] 2025-08-20T10:23:27 <ERR> [POSTPROC] main: Raw: 18556.44N, Value: , Status: Rate too high - Read: 18556.449 - Pre: 151.469 - Rate: 18404.980
[0d00h03m58s] 2025-08-20T10:25:28 <ERR> [POSTPROC] main: Raw: N5545.452, Value: , Status: Rate too high - Read: 5545.452 - Pre: 151.469 - Rate: 5393.983
[0d00h05m59s] 2025-08-20T10:27:29 <ERR> [POSTPROC] main: Raw: 09555.452, Value: , Status: Rate too high - Read: 9555.452 - Pre: 151.469 - Rate: 9403.983
[0d00h07m58s] 2025-08-20T10:29:27 <ERR> [POSTPROC] main: Raw: 19555.452, Value: , Status: Rate too high - Read: 19555.452 - Pre: 151.469 - Rate: 19403.983
[0d00h08m27s] 2025-08-20T10:29:57 <ERR> [OTA FILE] Failed to stat dir: /sdcard168.4.125/fileserver192.168.4.125/delete/config/!
[0d00h08m28s] 2025-08-20T10:29:57 <ERR> [OTA FILE] File already exists: /sdcard/config/config.ini
[0d00h08m34s] 2025-08-20T10:30:04 <ERR> [OTA FILE] Failed to stat file: /sdcard168.4.125/fileserver/config/config.ini!
[0d00h08m37s] 2025-08-20T10:30:06 <ERR> [OTA FILE] Failed to stat dir: /sdcard168.4.125/fileserver/!
[0d00h08m38s] 2025-08-20T10:30:08 <ERR> [OTA FILE] Failed to stat file: /sdcard/index.html!
[0d00h09m39s] 2025-08-20T10:31:08 <ERR> [OTA FILE] Failed to stat file: /sdcard/index.html!
[0d00h09m40s] 2025-08-20T10:31:10 <ERR> [OTA FILE] Failed to stat file: /sdcard/index.html!
[0d00h09m41s] 2025-08-20T10:31:11 <ERR> [OTA FILE] Failed to stat file: /sdcard/index.html!
[0d00h09m43s] 2025-08-20T10:31:13 <ERR> [OTA FILE] Failed to stat file: /sdcard/index.html!
[0d00h09m44s] 2025-08-20T10:31:14 <ERR> [OTA FILE] Failed to stat file: /sdcard/index.html!
[0d00h09m45s] 2025-08-20T10:31:15 <ERR> [OTA FILE] Failed to stat file: /sdcard/index.html!
[0d00h09m46s] 2025-08-20T10:31:16 <ERR> [OTA FILE] Failed to stat file: /sdcard/index.html!
[0d00h09m47s] 2025-08-20T10:31:16 <ERR> [OTA FILE] Failed to stat file: /sdcard/index.html!
[0d00h09m47s] 2025-08-20T10:31:17 <ERR> [OTA FILE] Failed to stat file: /sdcard/index.html!
[0d00h09m48s] 2025-08-20T10:31:18 <ERR> [OTA FILE] Failed to stat file: /sdcard/index.html!
[0d00h09m49s] 2025-08-20T10:31:19 <ERR> [OTA FILE] Failed to stat file: /sdcard/index.html!
[0d00h09m58s] 2025-08-20T10:31:28 <ERR> [POSTPROC] main: Raw: NN555.452, Value: , Status: Rate too high - Read: 555.452 - Pre: 151.469 - Rate: 403.983
[0d00h10m01s] 2025-08-20T10:31:31 <ERR> [OTA FILE] Failed to stat file: /sdcard/index.html!
[0d00h10m03s] 2025-08-20T10:31:33 <ERR> [OTA FILE] Failed to stat file: /sdcard/index.html!
[0d00h10m07s] 2025-08-20T10:31:37 <ERR> [OTA FILE] Failed to read file: /sdcard!
[0d00h10m10s] 2025-08-20T10:31:40 <ERR> [OTA FILE] Failed to read file: /sdcard!
[0d00h10m11s] 2025-08-20T10:31:41 <ERR> [OTA FILE] Failed to read file: /sdcard!
[0d00h10m37s] 2025-08-20T10:32:07 <ERR> [OTA FILE] Failed to read file: /sdcard!
[0d00h10m38s] 2025-08-20T10:32:08 <ERR> [OTA FILE] Failed to read file: /sdcard!
[0d00h10m39s] 2025-08-20T10:32:09 <ERR> [OTA FILE] Failed to read file: /sdcard!
[0d00h10m40s] 2025-08-20T10:32:09 <ERR> [OTA FILE] Failed to read file: /sdcard!
[0d00h10m40s] 2025-08-20T10:32:10 <ERR> [OTA FILE] Failed to read file: /sdcard!
[0d00h10m41s] 2025-08-20T10:32:11 <ERR> [OTA FILE] Failed to read file: /sdcard!
[0d00h10m42s] 2025-08-20T10:32:11 <ERR> [OTA FILE] Failed to read file: /sdcard!
[0d00h10m42s] 2025-08-20T10:32:12 <ERR> [OTA FILE] Failed to read file: /sdcard!
[0d00h10m43s] 2025-08-20T10:32:13 <ERR> [OTA FILE] Failed to read file: /sdcard!
[0d00h10m45s] 2025-08-20T10:32:14 <ERR> [OTA FILE] Failed to read file: /sdcard!
[0d00h10m46s] 2025-08-20T10:32:16 <ERR> [OTA FILE] Failed to read file: /sdcard!
[0d00h10m47s] 2025-08-20T10:32:17 <ERR> [OTA FILE] Failed to read file: /sdcard!
[0d00h10m48s] 2025-08-20T10:32:17 <ERR> [OTA FILE] Failed to read file: /sdcard!
[0d00h11m36s] 2025-08-20T10:33:06 <ERR> [OTA FILE] Failed to stat file: /sdcard/config/config.ini!

Expected Behavior

No 404s

Screenshots

No response

Additional Context

No response

[SybexX]

Did you flash the ESP32 new or make an OTA update to version 16.0.0?
flashed new: which SD files did you use?
OTA update: have you only selected the firmware.bin or the entire update.zip?

If you want to access the SD directly, you have to enter "http://your_ESP32_IP/fileserver/", "http://your_ESP32_IP/fileserver/html/", "http://your_ESP32_IP/fileserver/config/" or "http://your_ESP32_IP/fileserver/config/config.ini" in the address bar, for example.

[gauner1986]

Did you flash the ESP32 new or make an OTA update to version 16.0.0?

I used the OTA update and only flashed the firmware.bin

flashed new: which SD files did you use?

I formatted the SD card with FAT32 and used the manual.zip to extract all files to it

If you want to access the SD directly, you have to enter "http://your_ESP32_IP/fileserver/", "http://your_ESP32_IP/fileserver/html/", "http://your_ESP32_IP/fileserver/config/" or "http://your_ESP32_IP/fileserver/config/config.ini" in the address bar, for example.

The errors occur while i'm in the configration page or while setting up the reference image or alignment markers.
Often the configuration values do not load, or the reference image isn't displayed.
In the development tools of my browser i can see that i get 404 errors for config.ini or the reference image.
Sometimes the files load correctly. It's kind of random.

[gauner1986]

It turns out this might have something to do with me accessing the UI via a HTTP proxy (tinyproxy) in some cases.
If i access the UI without HTTP proxy the problems seem to disappear.

[SybexX]

For the OTA update you always have to use the Ai-on-the-edge device_update__vxx.x.x.zip.
If you only use the firmware.bin, the SD files remain old and those from version 15.7.0 are not compatible with version 16.0.0.