How do I use solid behavior for player without any built in behaviors?

I want to use the solid behavior for my obstacles. But my player doesn't seem to collide with them, it just passes through normally. I checked documentation and it appears solid only works when we use behaviors like 8-direction, platformer, etc.? I'm using simple 'move forward' action to move the player object (it is a simple snake game). So how do I get solid working for simple obstacles. Please help.

Thanks! This worked but one issue is the player doesn't move again. I'll see if I can improve upon this.