500 error code answer and not 404 for non existing files/folders

**Problem** dufs returns 500 for non existing folders files and not 404 **Configuration** - /mnt/ext - --hidden - ".*" - -A - --render-spa - --render-try-index - -a - kopia:pass@/Backup/kopia-laptop-full:rw **Log** "GET /Backup/kopia-laptop-full/.shards" 500 No such file or directory (os error 2) **Environment Information** - Dufs version: 0.45.0 - Browser/Webdav info: kopia, but works with curl in the same way - OS info: Docker + cachyOs - Proxy server (if any): zoraxy