How do I fill in a texture hole?

Hello, I have a question because an error seems to occur while using RC.

Of course the mesh is fine, but when I apply the texture I get texture holes in these tiny triangles.

When you open the packaging, you can see that the checkered pattern is missing.

Is there any way to fill this area with a texture?

The last picture is the texture settings. Please refer to it and solve it.

Hello,

To fix this it is recommended to change the value of the Large triangle removal threshold to a higher number, e.g. 100-200.

What causes this to happen?