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[BUG]: Fail to fetch using ARM NPU Embedder on Windows when user has non-ASCII characters in username. #4026

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@zacken

Description

@zacken

How are you running AnythingLLM?

AnythingLLM desktop app

What happened?

When trying to embed documents on a Windows ARM (Snapdragon) PC using the NPU Embedder it fails with a "Failed to fetch" error.
From log (username is anonymized):
[backend] info: [QnnNativeEmbedder] NPU is enabled, using QnnSDK backend at C:\Users\HxxxxxFørxx\AppData\Local\Programs\AnythingLLM\resources\QnnSDK\aarch64-windows-msvc\QnnHtp.dll
Runtime options:
backend_path: C:\Users\HxxxxxFørxx\AppData\Local\Programs\AnythingLLM\resources\QnnSDK\aarch64-windows-msvc\QnnHtp.dll
soc_model: 60
htp_arch: 73
htp_performance_mode: high_performance
enable_htp_fp16_precision: 1
Load model from C:\Users\HenrikFᅢᄌrli\AppData\Roaming\anythingllm-desktop\storage\models\qnn-embedder\all-minilm-l6-v2\model.onnx failed:Load model C:\Users\HxxxxxFᅢᄌrxx\AppData\Roaming\anythingllm-desktop\storage\models\qnn-embedder\all-minilm-l6-v2\model.onnx failed. File doesn't exist

In this case the character ø is replaced with ᅢᄌ in the path when loading model.onnx

When loading LLM models the correct path is created:
[backend] info: [TokenManager] Initialized new TokenManager instance for model: C:\Users\HxxxxxFørxx\AppData\Roaming\anythingllm-desktop\storage\models\QNN\phi_3_5_mini_instruct_4k

Are there known steps to reproduce?

Can be reproduced by using Windows account with international characters on a Windows ARM Snapdragon PC, install AnythingLLM, select NPU Embedder, embed document.

Work if no international characters in Windows username.

Workaround

Start a command prompt in administrator mode and create a symlink between the wrong folder and the correct one:

mklink /d C:\Users\HxxxxxFᅢᄌrxx C:\Users\HxxxxxFørxx

Verified to work.

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