Is it supported to use webdav Cloud Sync on Android devices?
On the one hand, I tried that on Windows, works perfectly, a little lagy tho.
On the other hand, my RA on Android device, it says “done”, but no data received, after an reinstalltion, it can’t even sync at all.
Here is the log file I got, Help me plz 
Using old --libretro behavior. Setting libretro_directory to "/data/user/0/com.retroarch/cores/" instead.
RetroArch 1.20.0 (Git 6412f4feef)
=== Build =======================================
容量: ASIMD
[INFO] Version: 1.20.0
[INFO] Git: 6412f4feef
[INFO] Built: Jan 4 2025
[INFO] =================================================
[Input]: Found input driver: "android".
[Environ]: SET_PIXEL_FORMAT: RGB565.
[Core]: libretro API 版本: 1, 未按照 API 编译: 1
[Core]: Geometry: 320x240, Aspect: 1.333, FPS: 60.00, Sample rate: 48000.00 Hz.
[Video]: Set video size to: 960x720.
Android EGL: GLES version = 2.
[EGL] Falling back to eglGetDisplay
[EGL]: EGL version: 1.5
[GL]: Found GL context: "egl_android".
[GL]: Config requires windowed mode, but context driver does not support it. Forcing fullscreen for this session.
[GL]: Detecting screen resolution: 0x0.
[EGL]: Current context: 0x7acd6d2700.
[GL]: Vendor: Qualcomm, Renderer: Adreno (TM) 642L.
[GL]: Version: OpenGL ES 3.2 [email protected] (GIT@329cf4c2a7, I63533b1e29, 1675175164) (Date:01/31/23).
[GL]: Using resolution 2306x1080.
[GL]: Default shader backend found: glsl.
[Shader driver]: Using GLSL shader backend.
[GL]: Stock GLSL shaders will be used.
[GLSL]: Found GLSL vertex shader.
[GLSL]: Found GLSL fragment shader.
[GLSL]: Linking GLSL program.
[GLSL]: Found GLSL vertex shader.
[GLSL]: Found GLSL fragment shader.
[GLSL]: Linking GLSL program.
[GLSL]: Found GLSL vertex shader.
[GLSL]: Found GLSL fragment shader.
[GLSL]: Linking GLSL program.
Setting up menu pipeline shaders for XMB ...
[GLSL]: Compiling ribbon shader..
[GLSL]: Found GLSL vertex shader.
[GLSL]: Found GLSL fragment shader.
[GLSL]: Linking GLSL program.
[GLSL]: Compiling simple ribbon shader..
[GLSL]: Found GLSL vertex shader.
[GLSL]: Found GLSL fragment shader.
[GLSL]: Linking GLSL program.
[GLSL]: Compiling snow shader..
[GLSL]: Found GLSL vertex shader.
[GLSL]: Found GLSL fragment shader.
[GLSL]: Linking GLSL program.
[GLSL]: Compiling modern snow shader..
[GLSL]: Found GLSL vertex shader.
[GLSL]: Found GLSL fragment shader.
[GLSL]: Linking GLSL program.
[GLSL]: Compiling bokeh shader..
[GLSL]: Found GLSL vertex shader.
[GLSL]: Found GLSL fragment shader.
[GLSL]: Linking GLSL program.
[GLSL]: Compiling snowflake shader..
[GLSL]: Found GLSL vertex shader.
[GLSL]: Found GLSL fragment shader.
[GLSL]: Linking GLSL program.
[GL]: Using 4 textures.
[GL]: Loaded 1 program(s).
[Joypad]: Found joypad driver: "android".
[Video]: Found display server: "android".
[Audio]: Set audio input rate to: 48000.00 Hz.
[OpenSL]: Requested audio latency: 128 ms.
[OpenSL]: Setting audio latency: Block size = 768, Blocks = 32, Total = 24576 ...
[Audio]: Started synchronous audio driver.
[Display]: Found display driver: "gl".
[Playlist]: 正在读取历史文件: "/storage/emulated/0/Android/data/com.retroarch/files/content_history.lpl".
[Playlist]: 正在读取历史文件: "/storage/emulated/0/Android/data/com.retroarch/files/content_music_history.lpl".
[Playlist]: 正在读取历史文件: "/storage/emulated/0/Android/data/com.retroarch/files/content_image_history.lpl".
[Playlist]: 正在加载收藏文件: "/storage/emulated/0/Android/data/com.retroarch/files/content_favorites.lpl".
[Audio]: Started audio driver "opensl" (is_shutdown=false)
[CloudSync] could not begin
[Input]: 抓取鼠标状态 => ON
[Audio]: Stopped audio driver "opensl"