Problems solved !

After discussing with my adviser, I tried some solution provided by APPLE from the internet.

https://support.apple.com/en-us/HT203930

I tried to do what the website suggest which is change the buffer size but it still stopped playing in Bar 12-13. Then I tried to make some changes on the setting of EXS24 but it didn't work neither. So, I decided to export each track one by one and redo it in a new file.

When I came to one of the vocal track, the DAW shows the overload massage again which helped me locate the problem track. Then I tried to delete the track and play the song again, It runs smoothly. Therefore, I only need to redo the problem-track part.

Luckily I can locate the problem and fix it so that I could save a lot of time in redoing the whole song.