FundMe with brownie. maxFeePerGas (0) is less than the block's baseFeePerGas

[dev-Suren]

I have problem while using ganache and brownie.
During FundMe with brownie lesson if i run the code without running ganache in termal then it wont show any problem but if i run ganache in terminal and run brownie script then it always give me error.

---

Brownie v1.17.2 - Python development framework for Ethereum

FundmeProject is the active project.
/home/rebootuser/.local/pipx/venvs/eth-brownie/lib/python3.8/site-packages/brownie/network/main.py:44: BrownieEnvironmentWarning: Development network has a block height of 3
warnings.warn(
Attached to local RPC client listening at '127.0.0.1:8545'...

Running 'scripts/deploy.py::main'...
0x476A84A7c9c000fA9c5fb8Bbf6df42e295690d69
The active network is development
Deploying mocks...
File "brownie/_cli/run.py", line 50, in main
return_value, frame = run(
File "brownie/project/scripts.py", line 103, in run
return_value = f_locals[method_name](*args, **kwargs)
File "./scripts/deploy.py", line 25, in main
deploy_fund_me()
File "./scripts/deploy.py", line 14, in deploy_fund_me
deploy_mocks()
File "./scripts/helpful_scripts.py", line 21, in deploy_mocks
MockV3Aggregator.deploy(
File "brownie/network/contract.py", line 528, in call
return tx["from"].deploy(
File "brownie/network/account.py", line 510, in deploy
receipt, exc = self._make_transaction(
File "brownie/network/account.py", line 752, in _make_transaction
exc = VirtualMachineError(e)
File "brownie/exceptions.py", line 104, in init
raise ValueError(exc["message"]) from None
ValueError: VM Exception while processing transaction: Transaction's maxFeePerGas (0) is less than the block's baseFeePerGas (586181641) (vm hf=london -> block -> tx)

[cromewar]

Hello @dev-Suren if you are already running ganache in terminal that would be a problem with the port, could you please share screenshot showing how you are running it?

[dev-Suren]

@cromewar here is the screen shot.

[cromewar]

Seems to be a problem with the maxFee your ganache is managing, you can refer here to know how to change it.

Anyways when your run test (without having ganache opened before) this will run a instance of ganache and go through the process as you said, also you can try using ganache ui.

btw: which linux distro are you using?

[HsienChun-Chen]

After I reinstall ganache,
It will report an error when ganache executed.
Deploy directly will success.
I wonder know what different between them.
Thanks a lot!

[cromewar]

I think this might be the way ganache gets executed when you run the command, using ganache cli in terminal makes it persistent as long as you keep it running it, when using ganache with brownie, this creates a new instance of ganache wich start and end at the execution.

[YassineA2]

hey, @HsienChun-Chen did you find a solution? i am running into the exact same error but i'm usin WSL, so i dont have access to ganache-ui

[cromewar]

Des this: https://stackoverflow.com/questions/70104101/valueerror-method-eth-maxpriorityfeepergas-not-supported-web3-py-with-ganache helps?

[YassineA2]

the provided lik is for working with web3.py, not brownie. I don't see how that would fix it