ESPAsyncWebServer + LittleFS = "file does not exist, no permits for creation"

Development Platforms
1

Hello.
I’ve finally switched my project from SPIFFS to LittleFS, but I keep getting the error: “file does not exist, no permits for creation” even though the web site works as intended.

I use platformio to build and upload the filesystem image:

[env:esp32-evb]
platform = espressif32
; board = esp32doit-devkit-v1
board = esp32-evb
board_build.filesystem = littlefs
framework = arduino
#WINDOWS:
upload_port = COM4
monitor_port = COM4

monitor_speed = 115200
monitor_filters = esp32_exception_decoder

build_flags = -DCORE_DEBUG_LEVEL=5
lib_deps = 
	https://github.com/me-no-dev/ESPAsyncWebServer.git
	bblanchon/ArduinoJson@^6.18.4
    https://github.com/ArduinoGetStarted/button

I use ESPAsyncWebServer to serve some files:

server.serveStatic("/settings", SPIFFS, "/settings.html");
server.serveStatic("/dashboard", SPIFFS, "/index.html");
server.serveStatic("/user", SPIFFS, "/user.html");

server.serveStatic("/", SPIFFS, "/").setCacheControl("max-age=600");

I’ve also posted the data folder that get’s uploaded:

image

Every time I access any of the web pages I get the following errors:

[ 52331][E][vfs_api.cpp:104] open(): /littlefs/index.html does not exist, no permits for creation
[ 52382][E][vfs_api.cpp:104] open(): /littlefs/bootstrap.css does not exist, no permits for creation
[ 52618][W][AsyncTCP.cpp:930] _poll(): pcb is NULL
[ 52619][W][AsyncTCP.cpp:930] _poll(): pcb is NULL
[ 52622][W][AsyncTCP.cpp:930] _poll(): pcb is NULL
[ 52622][W][AsyncTCP.cpp:930] _poll(): pcb is NULL
[ 59030][E][vfs_api.cpp:104] open(): /littlefs/settings.html does not exist, no permits for creation
[ 61925][E][vfs_api.cpp:104] open(): /littlefs/bootstrap.bundle.min.js.map.gz does not exist, no permits for creation
[ 61930][E][vfs_api.cpp:104] open(): /littlefs/bootstrap.bundle.min.js.map does not exist, no permits for creation
[ 61939][E][vfs_api.cpp:104] open(): /littlefs/bootstrap.bundle.min.js.map/index.htm.gz does not exist, no permits for creation
[ 61950][E][vfs_api.cpp:104] open(): /littlefs/bootstrap.bundle.min.js.map/index.htm does not exist, no permits for creation
[ 61965][E][vfs_api.cpp:104] open(): /littlefs/bootstrap.min.css.map.gz does not exist, no permits for creation
[ 61970][E][vfs_api.cpp:104] open(): /littlefs/bootstrap.min.css.map does not exist, no permits for creation
[ 61982][E][vfs_api.cpp:104] open(): /littlefs/bootstrap.min.css.map/index.htm.gz does not exist, no permits for creation
[ 61991][E][vfs_api.cpp:104] open(): /littlefs/bootstrap.min.css.map/index.htm does not exist, no permits for creation  
[ 67553][E][vfs_api.cpp:104] open(): /littlefs/bootstrap.bundle.min.js.map.gz does not exist, no permits for creation   
[ 67558][E][vfs_api.cpp:104] open(): /littlefs/bootstrap.bundle.min.js.map does not exist, no permits for creation      
[ 67567][E][vfs_api.cpp:104] open(): /littlefs/bootstrap.bundle.min.js.map/index.htm.gz does not exist, no permits for creation
[ 67578][E][vfs_api.cpp:104] open(): /littlefs/bootstrap.bundle.min.js.map/index.htm does not exist, no permits for creation
[ 67593][E][vfs_api.cpp:104] open(): /littlefs/bootstrap.min.css.map.gz does not exist, no permits for creation
[ 67599][E][vfs_api.cpp:104] open(): /littlefs/bootstrap.min.css.map does not exist, no permits for creation
[ 67609][E][vfs_api.cpp:104] open(): /littlefs/bootstrap.min.css.map/index.htm.gz does not exist, no permits for creation
[ 67619][E][vfs_api.cpp:104] open(): /littlefs/bootstrap.min.css.map/index.htm does not exist, no permits for creation

With SPIFFS I received no such errors.
The website works without problems.

2

I think this is just noise. As per

when requested for a “file” or path like index.html, it will first check if if the file is directly there, and if not, will check if the path plus .gz is there (like index.html.gz). The attempted access to the first file is likely causing the first error to appear

Is this still using SPIFFS or LittleFS?

3

So I shouldn’t be worried ?

Yes. Instead of redefining every SPIFFS in the code to LittleFS, I’ve decided to define it just once:

#include <LittleFS.h>

#define SPIFFS LittleFS
4

No need to worry I think. Mysterious how the SPIFFS filesystem doesn’t seem to throw that error though… maybe it doesn’t go through vfs_api.cpp?