White squares in eevee render While I render using the new eevee engine, the render has squares in it. 

I have Intel HD 620 integrated GPU and all GPU drivers are up-to-date. I can render it good in Cycles but not in Eevee? Why?
When I used add material option it added a principled bsdf node, I replaced it with Diffuse BSDF and it worked correctly. I don't know how. It's a possible workaround.