<!-- Needs the label "good first issue" assigned manually before or after opening -->
<!-- A good first issue is an uncontroversial issue, that has a relatively unique and obvious solution -->
<!-- Motivate the issue and explain the solution briefly -->
Useful skills:
<!-- (For example, “C++11 std::thread”, “Qt5 GUI and async GUI design” or “basic understanding of Bitcoin mining and the Bitcoin Core RPC interface”.) -->
Want to work on this issue?
For guidance on contributing, please read CONTRIBUTING.md before opening your pull request.