panic: open /root/.bitcoincash/bitcoincash.yml, get GOPATH failed

[whunmr]

Describe the bug

root@iZm5eakzlq9sm4ycm9lw0wZ:/home/whunmr/copernicus# cat nohup.out
get GOPATH failed, please check if gopath is configured.
panic: open /root/.bitcoincash/bitcoincash.yml: no such file or directory

goroutine 1 [running]:
github.com/copernet/copernicus/conf.must(0xd71900, 0x0, 0xe1efe0, 0xc4201ff4a0, 0x0, 0x0)
	/home/j/.go/src/github.com/copernet/copernicus/conf/conf.go:344 +0x9a
github.com/copernet/copernicus/conf.InitConfig(0xc42001e1e0, 0x1, 0x1, 0x0)
	/home/j/.go/src/github.com/copernet/copernicus/conf/conf.go:254 +0xdc2
main.appInitMain(0xc42001e1e0, 0x1, 0x1)
	/home/j/.go/src/github.com/copernet/copernicus/initmain.go:27 +0x5d
main.bchMain(0xe23d00, 0xc4200200b8, 0xc42001e1e0, 0x1, 0x1, 0x0, 0x0)
	/home/j/.go/src/github.com/copernet/copernicus/main.go:38 +0x68
main.main()
	/home/j/.go/src/github.com/copernet/copernicus/main.go:107 +0x1ef

To Reproduce
run copernicus on server without gopath configured.

Expected behavior
run normally, without depends on gopath