Hey my name is joohhnnn. Here is my update on EPF4 Week 4.

# Test eth_sendRawTransactionConditional() with bundler
Testing API with [Bundler](https://github.com/eth-infinitism/bundler)

1. Test the current codebase (geth) without opening conditionalRpc~~

2. Test the current codebase (geth) with opening conditionalRpc~~

2.1. Test with knownAccounts（already implemented by Bundler）—— test fail.

This error throw by [`supportsRpcMethod`](https://github.com/eth-infinitism/bundler/blob/d935f2690f19c3e22d30da942479acac92cc3f29/packages/bundler/src/utils.ts#L61)


2.2. Add other options to bundler and test them.

I test the condition with only Geth, will try to help 6450 next step
# Try to help issues bundler test issue
Try to help issues [6450](https://github.com/ethereum-optimism/optimism/issues/6450)

1. It's really strange. At the beginning, I added the following flags to the configuration:
--dev \
--rpc.allow-unprotected-txs \
--allow-insecure-unlock,
and then successfully deployed it. However, when I was doing POC (I'm not sure whether it was --dev or --allow-insecure-unlock that made it successful), the deployment failed again, and it was all due to insufficient balance. But when I checked the balance of 0xf39Fd6e51aad88F6F4ce6aB8827279cffFb92266, both l1 and l2 had enough balance.
2. There's another issue, it seems that the latest commit's devnet cannot be run directly with make devnet-up anymore, and it keeps telling me that the ./devnet addresses.json file is missing. For testing, I used git reset 7168db67c5b421975fef2a090aa6e6ee4e3ff298 --hard to do it.


# Next week’s schedule
Continue to try to solve issue 6450 and explore the architecture of Cost counts optimization