vendor dependencies error

[yougotitasdfg]

when I try to use this command in Ubuntu, this error message keeps getting up.But when I try to open the curl in google, it works fine.I don't know why, please help. victor@Victor:~/go/src/github.com/yougotitasdfg/fabric-samples/asset-transfer-basic/chaincode-go$ GO111MODULE=on go mod vendor go: downloading github.com/hyperledger/fabric-contract-api-go v1.2.0 go: downloading github.com/hyperledger/fabric-chaincode-go v0.0.0-20220720122508-9207360bbddd go: downloading github.com/hyperledger/fabric-protos-go v0.0.0-20220613214546-bf864f01d75e go: downloading google.golang.org/protobuf v1.28.0 go: downloading github.com/stretchr/testify v1.8.0 github.com/hyperledger/fabric-samples/asset-transfer-basic/chaincode-go imports github.com/hyperledger/fabric-contract-api-go/contractapi: github.com/hyperledger/[email protected]: Get "https://proxy.golang.org/github.com/hyperledger/fabric-contract-api-go/@v/v1.2.0.zip": dial tcp 142.251.42.241:443: i/o timeout github.com/hyperledger/fabric-samples/asset-transfer-basic/chaincode-go/chaincode/mocks imports github.com/hyperledger/fabric-chaincode-go/pkg/cid: github.com/hyperledger/[email protected]: Get "https://proxy.golang.org/github.com/hyperledger/fabric-chaincode-go/@v/v0.0.0-20220720122508-9207360bbddd.zip": dial tcp 142.251.42.241:443: i/o timeout github.com/hyperledger/fabric-samples/asset-transfer-basic/chaincode-go/chaincode/mocks imports github.com/hyperledger/fabric-chaincode-go/shim: github.com/hyperledger/[email protected]: Get "https://proxy.golang.org/github.com/hyperledger/fabric-chaincode-go/@v/v0.0.0-20220720122508-9207360bbddd.zip": dial tcp 142.251.42.241:443: i/o timeout github.com/hyperledger/fabric-samples/asset-transfer-basic/chaincode-go/chaincode/mocks imports github.com/hyperledger/fabric-protos-go/ledger/queryresult: github.com/hyperledger/[email protected]: Get "https://proxy.golang.org/github.com/hyperledger/fabric-protos-go/@v/v0.0.0-20220613214546-bf864f01d75e.zip": dial tcp 142.251.42.241:443: i/o timeout github.com/hyperledger/fabric-samples/asset-transfer-basic/chaincode-go/chaincode/mocks imports github.com/hyperledger/fabric-protos-go/peer: github.com/hyperledger/[email protected]: Get "https://proxy.golang.org/github.com/hyperledger/fabric-protos-go/@v/v0.0.0-20220613214546-bf864f01d75e.zip": dial tcp 142.251.42.241:443: i/o timeout github.com/hyperledger/fabric-samples/asset-transfer-basic/chaincode-go/chaincode/mocks imports google.golang.org/protobuf/types/known/timestamppb: google.golang.org/[email protected]: Get "https://proxy.golang.org/google.golang.org/protobuf/@v/v1.28.0.zip": dial tcp 142.251.42.241:443: i/o timeout github.com/hyperledger/fabric-samples/asset-transfer-basic/chaincode-go/chaincode tested by github.com/hyperledger/fabric-samples/asset-transfer-basic/chaincode-go/chaincode.test imports github.com/stretchr/testify/require: github.com/stretchr/[email protected]: Get "https://proxy.golang.org/github.com/stretchr/testify/@v/v1.8.0.zip": dial tcp 142.251.42.241:443: i/o timeout