{"record":{"id":"76d8f0bc38f2df4a","repo":"tauri-apps/tauri","slug":"file-does-not-exist-at-path-path","errorCode":null,"errorMessage":"File does not exist at path: {path}","messagePattern":"File does not exist at path: (.+?)","errorType":"http","errorClass":null,"httpStatus":404,"severity":"error","filePath":"crates/tauri/src/protocol/asset.rs","lineNumber":65,"sourceCode":"    log::error!(\"asset protocol not configured to allow the path: {path}\");\n    return resp.status(403).body(Vec::new().into()).map_err(Into::into);\n  }\n\n  // Separate block for easier error handling\n  let mut file = match File::open(path.clone()) {\n    Ok(file) => file,\n    Err(e) => {\n      #[cfg(target_os = \"android\")]\n      {\n        if path.starts_with(\"/storage/emulated/0/Android/data/\") {\n          log::error!(\n            \"Failed to open Android external storage file '{path}': {e}. This may be due to missing storage permissions.\"\n          );\n        }\n      }\n      return if e.kind() == std::io::ErrorKind::NotFound {\n        log::error!(\"File does not exist at path: {path}\");\n        return resp.status(404).body(Vec::new().into()).map_err(Into::into);\n      } else if e.kind() == std::io::ErrorKind::PermissionDenied {\n        log::error!(\"Missing OS permission to access path \\\"{path}\\\": {e}\");\n        return resp.status(403).body(Vec::new().into()).map_err(Into::into);\n      } else {\n        Err(e.into())\n      };\n    }\n  };\n\n  let len = file.metadata()?.len();\n  let (mime_type, read_bytes) = {\n    // get file mime type\n    let nbytes = len.min(8192);\n    let mut magic_buf = Vec::with_capacity(nbytes as usize);\n    (&mut file).take(nbytes).read_to_end(&mut magic_buf)?;\n    file.rewind()?;\n    (\n      MimeType::parse(&magic_buf, &path),","sourceCodeStart":47,"sourceCodeEnd":83,"githubUrl":"https://github.com/tauri-apps/tauri/blob/460ec35447493200d64290dd7f015d5a91d0fd58/crates/tauri/src/protocol/asset.rs#L47-L83","documentation":"Fires in the tauri custom asset protocol handler (get_response) when File::open on the requested path fails, i.e. the resolved asset path does not exist on disk or is unreadable. The HTTP response returned to the webview carries the formatted error message with the offending path.","triggerScenarios":"File::open(path) inside get_response returns std::io::ErrorKind::NotFound — the webview requested an asset:// URL for a path that was deleted, moved, or never existed.","commonSituations":"Frontend caches an asset URL after the file was deleted/renamed; race where an export/temp file hasn't been written yet; typo in path or wrong drive letter/case on Windows; external storage file removed on Android.","solutions":["Check the file exists (and is spelled correctly) before building/using the asset URL in the frontend","Regenerate or re-download the asset if it was temporary and has been cleaned up","Handle the 404 in the webview (e.g. re-invoke the backend to refresh the file) instead of showing a broken image"],"exampleFix":"// before\nconst url = convertFileSrc(staleCache.path);\n// after\nconst exists = await invoke('file_exists', { path: staleCache.path });\nif (!exists) await regenerateFile();\nconst url = convertFileSrc(staleCache.path);","handlingStrategy":"validation","validationCode":"import { exists, BaseDirectory } from '@tauri-apps/plugin-fs';\nconst ok = await exists(path, { baseDir: BaseDirectory.Home });\nif (!ok) throw new Error(`asset missing: ${path}`);","typeGuard":"function assetExists(p: string): boolean {\n  try { return statSync(p).isFile(); } catch { return false; }\n}","tryCatchPattern":"const resp = await fetch(assetUrl);\nif (resp.status === 404) {\n  await regenerateAsset(path); // then re-request with fresh URL\n}","preventionTips":["Regenerate asset URLs whenever the underlying file changes or is recreated","Don't cache asset:// URLs across sessions for temporary files","Verify file existence in Rust before returning the path to the frontend"],"tags":["tauri","http-404","filesystem","asset-protocol"],"backgroundTag":"file-not-found","analyzedSha":"460ec35447493200d64290dd7f015d5a91d0fd58","analyzedAt":"2026-09-18T23:55:51.277Z","contentChangedAt":"2026-09-18T23:55:51.277Z","schemaVersion":2},"datasetVersion":"2026-09-23T08:17:48.524Z"}