This is a super basic question, but I have absolutelly no clue why there is no collision and the player continues to fall. Im following FreeCodeCamp(minute 37:20). This is what I have: What is Happening?
Layer Collision Matrix of your Physics 2D project settings to make sure the "Default" layer reacts to itself. I've seen this mysteriously get turned off before.
To access this, Go to Edit > Project Settings… then click on the Physics 2D label on the left. The Layer Collision Matrix is at the very bottom of the list of settings. This matrix controls whether layers react to other layers, including themselves.