$GOPATH
proto

My files structure

TaskInfo.proto
syntax = "proto3";
package chaochaogege.filecatcher.common;

option go_package = "common";

import "chaochaogege.com/filecatcher/common/ChunkInfo.proto";

message TaskInfo{
    string name = 1;
    string storePath = 2;
    uint32 workersNum = 3;
    uint32 totalSize = 4;
    repeated chaochaogege.filecatcher.common.ChunkInfo chunkInfo = 5;
}

ChunkInfo.proto

syntax = "proto3";
package chaochaogege.filecatcher.common;

option go_package = "common";

message ChunkInfo{
    uint32 startBytes = 1;
    uint32 endBytes = 2;
    uint32 totalBytes = 3;
    uint32 downloaded = 4;
    uint32 orderId = 5;

}

go.mod

module chaochaogege.com/filecatcher

require (
  github.com/golang/protobuf v1.2.0
)

When I run follow (in filecatcher/common directory)

protoc --go_out=./ TaskInfo.proto

protoc said:

chaochaogege.com/filecatcher/common/ChunkInfo.proto: File not found.TaskInfo.proto: Import "chaochaogege.com/filecatcher/common/ChunkInfo.proto" was not found or had errors.
TaskInfo.proto:13:14: "chaochaogege.filecatcher.common.ChunkInfo" is notdefined.

I have googled, But all of questions are not about go module

Did I use wrong import path or My config is not correct?

If Stackoverflow cannot anwser my question, I think it's a bug. I should go to Github issue for report..