Request unsync block panic in tracing mode

[boundless-forest]

We found a panic issue about tracing in our test network today. The client will panic if we post a debug_traceBlockByNumber request to get the block unsync block. This should not happen in my view.

Thread 'tokio-runtime-worker' panicked at 'called `Option::unwrap()` on a `None` value', /root/Codes/darwinia-network/common/client/dvm/rpc/src/debug.rs:332

// Get the header I want to work with.
let header = client.header(reference_id).unwrap().unwrap();

2022-02-10 05:35:10 The NetworkStart returned as part of `build_network` has been silently dropped
Error: Service(Other("Invalid argument: Column families not opened: col3, col2, col1, col0"))

[boundless-forest]

Need to find out why the DB is corrupted in this case.