Mistake #1. White House press described Mr Lee Hsien Loong as President of Indonesia, Joko Widodo.
After the post was corrected.
President Trump speaking with Prime Minister of Singapore, Lee Hsien Loong before the start of their bilateral meeting.
Mistake #2: China says US has apologized for Taiwan name gaffe
The White House press made another mistake when they described President Xi from the Republic of China instead of People's Republic of China. Republic of China is the formal name for Taiwan.