Unable to load the Arduino IDE context extension

[vl-sher]

Hi, I can see the "Upload LittleFS..." command, but after I select it I get the "Unable to load the Arduino IDE Context extension" message.
Windows 10, Arduino IDE 2.3.6, plugin 1.5.4, plugin location %userprofile%.arduinoIDE\plugins. Nothing in IDE output window. Please advise.

[vl-sher]

I have manually installed dankeboy36
vscode-arduino-api v. 0.2.1 and now I receive "Board details is undefined".
I have a chinese Wemos D1 R1 board, which is discovered by zzInoVIDPID as "FTDI FT232RL/RQ/BM/BL/BQ, FT245RL/RQ/BM/BL/BQ, VNC1L, VNC2".
Stuck again :( please advise.

[vl-sher]

Both extensions load, but vscode-arduino-api returns arduinoContext with no data in function activate(context)
{ "config": {}, "openedSketches": [] }
So I guess that the problem is that vscode-arduino-api can not correctly process my board.

[earlephilhower]

The problem is likely more basic, probably to do with your IDE install. There is no reason to manually include the dankeboy TS file, it's already included in the uploader VSIX file (it's just a ZIP you can open and examine by renaming it).

You might get better help from the IDE folks on the Arduino forums. Be sure to include the loading logs. If you see something like

2025-07-14T19:15:13.635Z root INFO [arduino-littlefs-upload-1.5.4]: deployment dir "/home/earle/.arduinoIDE/deployedPlugins/arduino-littlefs-upload-1.5.4" already exists
2025-07-14T19:15:13.635Z root INFO root path: /home/earle/.arduinoIDE/deployedPlugins/arduino-littlefs-upload-1.5.4

you may want to exit, manually delete the .arduinoIDE/deployedPlugins folder and restart and see if that fixes things.

As a brute-force method, uninstall the IDE, delete the .arduinoIDE folder, then re-install from scratch the IDE, ESP8266 core, and plug in.