openai/codex · error · io::Error

InvalidData

InvalidData

Error message

remote fs/readFile returned invalid base64 dataBase64: {err}

What it means

Error "remote fs/readFile returned invalid base64 dataBase64: {err}" thrown in openai/codex.

Source

Thrown at codex-rs/exec-server/src/remote_file_system.rs:95

    async fn read_file(
        &self,
        path: &PathUri,
        options: ReadFileOptions,
        sandbox: Option<&FileSystemSandboxContext>,
    ) -> FileSystemResult<Vec<u8>> {
        trace!("remote fs read_file");
        let client = self.client.get().await.map_err(map_remote_error)?;
        let response = client
            .fs_read_file(FsReadFileParams {
                path: path.clone(),
                follow_symlinks: (!options.follow_symlinks).then_some(false),
                sandbox: remote_sandbox_context(sandbox),
            })
            .await
            .map_err(map_remote_error)?;
        STANDARD.decode(response.data_base64).map_err(|err| {
            io::Error::new(
                io::ErrorKind::InvalidData,
                format!("remote fs/readFile returned invalid base64 dataBase64: {err}"),
            )
        })
    }

    async fn read_file_stream(
        &self,
        path: &PathUri,
        sandbox: Option<&FileSystemSandboxContext>,
    ) -> FileSystemResult<FileSystemReadStream> {
        trace!("remote fs read_file_stream");
        let client = self.client.get().await.map_err(map_remote_error)?;
        file_stream::open(client, path.clone(), remote_sandbox_context(sandbox)).await
    }

    async fn write_file(
        &self,

View on GitHub (pinned to 339751715c)

When it happens

Trigger: Thrown at codex-rs/exec-server/src/remote_file_system.rs:95 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of openai/codex@339751715c (2026-08-25). Data as JSON: /api/errors/a67788826f24498b. Report an issue: GitHub.