嗨，我是区块链主题的新手，我正在尝试制作以太坊智能合约。第一步，我安装了 truffle，当我尝试迁移时它会抛出一个错误，因为我没有以太坊客户端。为了解决这个问题 truffle develop 推荐 ganache, geth 但我无法决定哪个更合适，我不明白 ganache 和 geth 的区别。基本上他们是否提供相同的服务？这是错误：
Could not connect to your Ethereum client with the following parameters:
- host > 127.0.0.1
- port > 7545
- network_id > *
Please check that your Ethereum client:
- is running
- is accepting RPC connections (i.e., "--rpc" option is used in geth)
- is accessible over the network
- is properly configured in your Truffle configuration file (truffle-config.js)