One of my mesh objects is invisible are reopening file. How do I solve that?

[Anonymous]

https://i.gyazo.com/b49970eab50a98dab34d8ae78e6b6f89.mp4

I have no idea why one of my meshes in a group is invisible. It happened after I reopened a file.

It is NOT hidden in a layer. It is also NOT greyed out in the outliner. What am I doing wrong?

[Anonymous · Accepted solution]

Oh snap.. It was my material. I changed the material and the problem is solved!