TypeError: 'NoneType' object is not subscriptable for certain Fork URLs

[antazoey]

Some fork URLs I try occasionally lead to uncaught exception that doesn't help me know what was wrong enough.
For example, the RPC: https://rpc2.sepolia.org

lead to

/Users/az/virtualenvs/ape/lib/python3.12/site-packages/boa/vm/fork.py:139: in __init__
    super().__init__(caching_rpc, block_identifier, *args, **kwargs2)
/Users/az/virtualenvs/ape/lib/python3.12/site-packages/boa/vm/fork.py:156: in __init__
    self._block_number = to_int(self._block_info["number"])
E   TypeError: 'NoneType' object is not subscriptable
--------------------------------------------------------------------------- Captured stdout setup ---------------------------------------------------------------------------
INFO:     Connecting to existing Geth node at https://rpc2.sepolia.org.
---------------------------------------------------------------------------- Captured log setup -----------------------------------------------------------------------------
INFO     ape:provider.py:1601 Connecting to existing Geth node at https://rpc2.sepolia.org.
========================================================================== short test summary info ==========================================================================
ERROR tests/test_fork_provider.py::test_block_identifier - TypeError: 'NoneType' object is not subscriptable

Maybe this is a "light" node or something.

Here is the code with the exception:

        self._block_info = self._rpc.fetch_uncached(
            "eth_getBlockByNumber", [block_identifier, False]
        )
        self._block_number = to_int(self._block_info["number"])

so block_info is None for some reason.

I don't know what the exact problem is so I don't know what to suggest, but maybe something like:

        self._block_info = self._rpc.fetch_uncached(
            "eth_getBlockByNumber", [block_identifier, False]
        )
        if self._block_info is None:
            raise ValueError("Your RPC does not have the block ID specified.")

        self._block_number = to_int(self._block_info["number"])