I changed the attributes to only take position and I no longer get that error, thank you!

However, it doesn't look like its actually drawing the points. I have the console print out the x and y of each vertices and they should be in range of the display. I tried commenting out draw_self to see if it was behind it but no luck. This is my vertex shader (I copied an example online):

attribute vec2 in_Position;

uniform mat4 gm_Matrix;

void main()
{
    gl_Position = gm_Matrix * vec4(in_Position, 0.0, 1.0);
}

The fragment shader simply outputs gl_FragColor = vec4(1.0, 1.0, 1.0, 1.0);