Why didn’t Trump send any message to pro-Iran Qatar?
Qatar and Iran also share management of the world's largest gas field, South Pars, in the Persian Gulf.
https://www.cnbc.com/2017/06/05/gulf-crisis-qatar-may-move-closer-to-turkey-iran.html 6 June 2017
Because Qatar supports Jihadi's and is close to Iran partially because of proximity to oil/gas reserves. It probably was judged as unimportant. There is a conflict between various interests in the region about supplying Natural Gas and oil to the EU. They all want the EU to be dependent upon their supply, it is a question of who will actually deliver it and what path will pipeline take.