A year later, Malawi refused to hold an African Union summit meeting, when the AU insisted that Al Bashir be allowed to attend. It appears that in the year since Al Bashir's first visit to Malawi, western donor states issued threats of consequences to Malawi, a poor country that relies on western humanitarian aid to feed a section of its population. So Al Bashir never returned to Malawi, and the AU summit was relocated to Ethiopia.
https://www.aljazeera.com/news/2012/6/9/malawi-cancels-au-summit-over-sudans-bashir