Before it does an RTH again, get Tower (Android) or Mission Planner (PC) connect it to Solo, and change your RTH (Return to Home) altitude to 150 feet. It is currently 50 feet, and unless you live in a very flat place with no trees, that is to low, and could cause a crash when that happens again.
The value is in CM, and defaults to 1500. You want to make it 4500.
There are tutorials here to connect Tower and Mission Planner, as well as changing the RTH.
Traveling or I would go into it, but several great folks here can help if you need it.