Uninformative error message in terminal when trying to open webviz ert with incompatible storage

[larsevj]

Describe the bug If you try to open webviz-ert with an experiment that was made with an older incompatible storage, e.g. created experiment with 2024.02 and try to run webviz-ert with 2024.04, then you will get the following Error printed to the terminal.

ERROR:root:Error fetching data from http://127.0.0.1:51827/experiments
                The request return with status code: 500
                b'Traceback (most recent call last):\n  File "/prog/res/komodo/2024.04.rc0-py38-rhel7/root/lib64/python3.8/site-packages/starlette/middleware/errors.py", line 164, in __call__\n    await self.app(scope, receive, _send)\n  File "/prog/res/komodo/2024.04.rc0-py38-rhel7/root/lib64/python3.8/site-packages/starlette/middleware/exceptions.py", line 62, in __call__\n    await wrap_app_handling_exceptions(self.app, conn)(scope, receive, send)\n  File "/prog/res/komodo/2024.04.rc0-py38-rhel7/root/lib64/python3.8/site-packages/starlette/_exception_handler.py", line 64, in wrapped_app\n    raise exc\n  File "/prog/res/komodo/2024.04.rc0-py38-rhel7/root/lib64/python3.8/site-packages/starlette/_exception_handler.py", line 53, in wrapped_app\n    await app(scope, receive, sender)\n  File "/prog/res/komodo/2024.04.rc0-py38-rhel7/root/lib64/python3.8/site-packages/starlette/routing.py", line 758, in __call__\n    await self.middleware_stack(scope, receive, send)\n  File "/prog/res/komodo/2024.04.rc0-py38-rhel7/root/lib64/python3.8/site-packages/starlette/routing.py", line 778, in app\n    await route.handle(scope, receive, send)\n  File "/prog/res/komodo/2024.04.rc0-py38-rhel7/root/lib64/python3.8/site-packages/starlette/routing.py", line 299, in handle\n    await self.app(scope, receive, send)\n  File "/prog/res/komodo/2024.04.rc0-py38-rhel7/root/lib64/python3.8/site-packages/starlette/routing.py", line 79, in app\n    await wrap_app_handling_exceptions(app, request)(scope, receive, send)\n  File "/prog/res/komodo/2024.04.rc0-py38-rhel7/root/lib64/python3.8/site-packages/starlette/_exception_handler.py", line 64, in wrapped_app\n    raise exc\n  File "/prog/res/komodo/2024.04.rc0-py38-rhel7/root/lib64/python3.8/site-packages/starlette/_exception_handler.py", line 53, in wrapped_app\n    await app(scope, receive, sender)\n  File "/prog/res/komodo/2024.04.rc0-py38-rhel7/root/lib64/python3.8/site-packages/starlette/routing.py", line 74, in app\n    response = await func(request)\n  File "/prog/res/komodo/2024.04.rc0-py38-rhel7/root/lib64/python3.8/site-packages/fastapi/routing.py", line 269, in app\n    solved_result = await solve_dependencies(\n  File "/prog/res/komodo/2024.04.rc0-py38-rhel7/root/lib64/python3.8/site-packages/fastapi/dependencies/utils.py", line 600, in solve_dependencies\n    solved = await run_in_threadpool(call, **sub_values)\n  File "/prog/res/komodo/2024.04.rc0-py38-rhel7/root/lib64/python3.8/site-packages/starlette/concurrency.py", line 42, in run_in_threadpool\n    return await anyio.to_thread.run_sync(func, *args)\n  File "/prog/res/komodo/2024.04.rc0-py38-rhel7/root/lib64/python3.8/site-packages/anyio/to_thread.py", line 56, in run_sync\n    return await get_async_backend().run_sync_in_worker_thread(\n  File "/prog/res/komodo/2024.04.rc0-py38-rhel7/root/lib64/python3.8/site-packages/anyio/_backends/_asyncio.py", line 2144, in run_sync_in_worker_thread\n    return await future\n  File "/prog/res/komodo/2024.04.rc0-py38-rhel7/root/lib64/python3.8/site-packages/anyio/_backends/_asyncio.py", line 851, in run\n    result = context.run(func, *args)\n  File "/prog/res/komodo/2024.04.rc0-py38-rhel7/root/lib64/python3.8/site-packages/ert/dark_storage/enkf.py", line 22, in get_storage\n    return (_storage := open_storage(os.environ["ERT_STORAGE_ENS_PATH"]))\n  File "/prog/res/komodo/2024.04.rc0-py38-rhel7/root/lib64/python3.8/site-packages/ert/storage/__init__.py", line 34, in open_storage\n    return LocalStorage(Path(path), Mode(mode))\n  File "/prog/res/komodo/2024.04.rc0-py38-rhel7/root/lib64/python3.8/site-packages/ert/storage/local_storage.py", line 85, in __init__\n    raise RuntimeError(\nRuntimeError: Cannot open storage \'/private/levje/ert/test-data/poly_example/storage\' in read-only mode: Storage version 4 is too old\n'
                
2024-04-11 14:58:27,552 [ERROR] uvicorn.error: Exception in ASGI application
Traceback (most recent call last):
  File "/prog/res/komodo/2024.04.rc0-py38-rhel7/root/lib64/python3.8/site-packages/uvicorn/protocols/http/h11_impl.py", line 412, in run_asgi
    result = await app(  # type: ignore[func-returns-value]
  File "/prog/res/komodo/2024.04.rc0-py38-rhel7/root/lib64/python3.8/site-packages/uvicorn/middleware/proxy_headers.py", line 84, in __call__
    return await self.app(scope, receive, send)
  File "/prog/res/komodo/2024.04.rc0-py38-rhel7/root/lib64/python3.8/site-packages/fastapi/applications.py", line 1054, in __call__
    await super().__call__(scope, receive, send)
  File "/prog/res/komodo/2024.04.rc0-py38-rhel7/root/lib64/python3.8/site-packages/starlette/applications.py", line 123, in __call__
    await self.middleware_stack(scope, receive, send)
  File "/prog/res/komodo/2024.04.rc0-py38-rhel7/root/lib64/python3.8/site-packages/starlette/middleware/errors.py", line 186, in __call__
    raise exc
  File "/prog/res/komodo/2024.04.rc0-py38-rhel7/root/lib64/python3.8/site-packages/starlette/middleware/errors.py", line 164, in __call__
    await self.app(scope, receive, _send)
  File "/prog/res/komodo/2024.04.rc0-py38-rhel7/root/lib64/python3.8/site-packages/starlette/middleware/exceptions.py", line 62, in __call__
    await wrap_app_handling_exceptions(self.app, conn)(scope, receive, send)
  File "/prog/res/komodo/2024.04.rc0-py38-rhel7/root/lib64/python3.8/site-packages/starlette/_exception_handler.py", line 64, in wrapped_app
    raise exc
  File "/prog/res/komodo/2024.04.rc0-py38-rhel7/root/lib64/python3.8/site-packages/starlette/_exception_handler.py", line 53, in wrapped_app
    await app(scope, receive, sender)
  File "/prog/res/komodo/2024.04.rc0-py38-rhel7/root/lib64/python3.8/site-packages/starlette/routing.py", line 758, in __call__
    await self.middleware_stack(scope, receive, send)
  File "/prog/res/komodo/2024.04.rc0-py38-rhel7/root/lib64/python3.8/site-packages/starlette/routing.py", line 778, in app
    await route.handle(scope, receive, send)
  File "/prog/res/komodo/2024.04.rc0-py38-rhel7/root/lib64/python3.8/site-packages/starlette/routing.py", line 299, in handle
    await self.app(scope, receive, send)
  File "/prog/res/komodo/2024.04.rc0-py38-rhel7/root/lib64/python3.8/site-packages/starlette/routing.py", line 79, in app
    await wrap_app_handling_exceptions(app, request)(scope, receive, send)
  File "/prog/res/komodo/2024.04.rc0-py38-rhel7/root/lib64/python3.8/site-packages/starlette/_exception_handler.py", line 64, in wrapped_app
    raise exc
  File "/prog/res/komodo/2024.04.rc0-py38-rhel7/root/lib64/python3.8/site-packages/starlette/_exception_handler.py", line 53, in wrapped_app
    await app(scope, receive, sender)
  File "/prog/res/komodo/2024.04.rc0-py38-rhel7/root/lib64/python3.8/site-packages/starlette/routing.py", line 74, in app
    response = await func(request)
  File "/prog/res/komodo/2024.04.rc0-py38-rhel7/root/lib64/python3.8/site-packages/fastapi/routing.py", line 269, in app
    solved_result = await solve_dependencies(
  File "/prog/res/komodo/2024.04.rc0-py38-rhel7/root/lib64/python3.8/site-packages/fastapi/dependencies/utils.py", line 600, in solve_dependencies
    solved = await run_in_threadpool(call, **sub_values)
  File "/prog/res/komodo/2024.04.rc0-py38-rhel7/root/lib64/python3.8/site-packages/starlette/concurrency.py", line 42, in run_in_threadpool
    return await anyio.to_thread.run_sync(func, *args)
  File "/prog/res/komodo/2024.04.rc0-py38-rhel7/root/lib64/python3.8/site-packages/anyio/to_thread.py", line 56, in run_sync
    return await get_async_backend().run_sync_in_worker_thread(
  File "/prog/res/komodo/2024.04.rc0-py38-rhel7/root/lib64/python3.8/site-packages/anyio/_backends/_asyncio.py", line 2144, in run_sync_in_worker_thread
    return await future
  File "/prog/res/komodo/2024.04.rc0-py38-rhel7/root/lib64/python3.8/site-packages/anyio/_backends/_asyncio.py", line 851, in run
    result = context.run(func, *args)
  File "/prog/res/komodo/2024.04.rc0-py38-rhel7/root/lib64/python3.8/site-packages/ert/dark_storage/enkf.py", line 22, in get_storage
    return (_storage := open_storage(os.environ["ERT_STORAGE_ENS_PATH"]))
  File "/prog/res/komodo/2024.04.rc0-py38-rhel7/root/lib64/python3.8/site-packages/ert/storage/__init__.py", line 34, in open_storage
    return LocalStorage(Path(path), Mode(mode))
  File "/prog/res/komodo/2024.04.rc0-py38-rhel7/root/lib64/python3.8/site-packages/ert/storage/local_storage.py", line 85, in __init__
    raise RuntimeError(
RuntimeError: Cannot open storage '/private/levje/ert/test-data/poly_example/storage' in read-only mode: Storage version 4 is too old

Expected behaviour Should not get the full stack trace, and instead get the solution to the Error which is to open ert so that storage migration happens.

Environment

• OS: [e.g. RHEL7]
• ERT/Komodo release: [e.g. 2.18 or 2020.12.00]
• Python version
• Remote/HPC execution involved: [yes|no]

Additional context Add any other context about the problem here.

[andreas-el]

I think this relates to #7630