Some file access fails sometimes

[martinRenou]

Description

Sometimes fails with

Uncaught (in promise) TypeError: Cannot read properties of null (reading 'path')
    at e.onmessage (index.js:160:34)
kernels.js:50 Uncaught (in promise) RangeError: Maximum call stack size exceeded
    at abort (/euroscipy-2022-jupyterlite-emscripten-forge/extensions/@jupyterlite/xeus-python-kernel/static/xpython_wasm.js:9:20546)
    at _abort (/euroscipy-2022-jupyterlite-emscripten-forge/extensions/@jupyterlite/xeus-python-kernel/static/xpython_wasm.js:9:200143)
    at /euroscipy-2022-jupyterlite-emscripten-forge/extensions/@jupyterlite/xeus-python-kernel/static/xpython_wasm.wasm
    at /euroscipy-2022-jupyterlite-emscripten-forge/extensions/@jupyterlite/xeus-python-kernel/static/xpython_wasm.wasm
    at /euroscipy-2022-jupyterlite-emscripten-forge/extensions/@jupyterlite/xeus-python-kernel/static/xpython_wasm.wasm
    at /euroscipy-2022-jupyterlite-emscripten-forge/extensions/@jupyterlite/xeus-python-kernel/static/xpython_wasm.wasm
    at /euroscipy-2022-jupyterlite-emscripten-forge/extensions/@jupyterlite/xeus-python-kernel/static/xpython_wasm.wasm
    at /euroscipy-2022-jupyterlite-emscripten-forge/extensions/@jupyterlite/xeus-python-kernel/static/xpython_wasm.wasm
    at /euroscipy-2022-jupyterlite-emscripten-forge/extensions/@jupyterlite/xeus-python-kernel/static/xpython_wasm.wasm
    at /euroscipy-2022-jupyterlite-emscripten-forge/extensions/@jupyterlite/xeus-python-kernel/static/xpython_wasm.wasm

Reproduce

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2. Click on '...'
3. Scroll down to '...'
4. See error '...'

Expected behavior

Context

• JupyterLite version:
• Operating System and version:
• Browser and version:

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