I have a question about Ethereum truffle error.

geth —testnet —syncmode fast —rpc —rpcapi db,eth,net,web3,personal —cache=1024 —rpcport 8545 —rpcaddr 127.0.0.1 —rpccorsdomain "*"

Or

geth —rinkeby —syncmode "fast" —rpc —rpcapi db,eth,net,web3,personal —cache=1024 —rpcport 8545 —rpcaddr 127.0.0.1 —rpccorsdomain "*"

It always ran when I entered the truffle console after running, but suddenly

Could not connect to your Ethereum client. 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.js)

These errors are frequent.

geth works normally, but I don't know why the error appears no matter how much I look for it.

Even if I ask the tutorial company, they say they don't know

I got it all right with port 8545 and there is no problem with setting the truffle.js file.

If there is anything different than before, you must enter the sudo geth --ipcdisable command when you run geth.

Has anyone experienced this problem?