Failed to compute eigen-decomposition

Hi! Thanks for this awesome work. 
I wanted to calculate the diffuse operators in a mesh, and it gave error "Failed to compute eigen-decomposition". What can be possible solution for this? 

I have uploaded the particular mesh from Cloth3D [here](https://iiitaphyd-my.sharepoint.com/:u:/g/personal/chandradeep_pokhariya_research_iiit_ac_in/ER0IVrHhzilMpKtZnVyb2d0Bzgravu4rUKFqmpFeFg0VuA?e=cWv9l3).