Seamless mesh array modifier - Blender Stack Exchange

I have symmetrical mesh which I want to be used as tiles but as you can see on the picture there is a seam when I use the Array modifier is there a way to be made seamless?

Seamless mesh array modifier - Blender Stack Exchange

Seamless mesh array modifier - Blender Stack Exchange

Seamless mesh array modifier - Blender Stack Exchange

Seamless mesh array modifier - Blender Stack Exchange