A Rwandan government official was briefly arrested in the UK, following an international request relating to alleged activities in Rwanda and the DRC. The Rwandan authorities have been angered by the arrest. The arrest comes as the UK and Rwandan governments have been growing slightly more distant in the last year, having previously had close ties.
It isn't clear whether wider commercial ties between the two countries will be affected. They shouldn't be - the profitability of a project isn't affected by the relations of governments. But there is always the possibility that the tone of personal relations between citizens of the two countries will follow that of their governments. I don't know why, but that's often how it is in my experience. It isn't me or the people I usually meet who set policy.