Bad Weighting

[Aquaileron]

I went to check a model and I got an error message

• This model has 2 point(s) with bad weighting. The weights of each bone should sum up to exactly 100% for each point, as otherwise they will not move correctly. If this model was converted from another format with a tool/script, there may be a flaw in the tool/script.
  

I've checked several times exporting if from an FBX to DAE and i've never had this problem with the other models i've converted but the problem persists with this one for some reason.

I don't know why it's this specific character because looking at his face makes me want to cry.

Any help would be appreciated because I can't stand looking at him for much longer.