Player sinking into walls and floor with Raycasts

I have figured out the problem! It turns out that the collider.bounds.center is a vector relative to the world origin (it goes from 0,0 in the world to the center of the character), while collder.bounds.extents is a vector relative to the collider origin (it goes from 0,0 in the world to something diagonally above 0,0 , not actually to the model). This made me change a few things.

First, in line 26, I moved the declaration of the player variable to the top of the script. Doing this stopped the error from happening.

Second, I created a variable called AbsVelocityY, which is the absolute value of the Y direction of the velocity, and I made the raycast use this value as its distance. This makes it so that the raycast will essentially detect the object 1 frame before the character would hit it.

Third, I changed line 40 and line 60 to change the players position to FloorHit.point.y + collider.bounds.extents (because extents is relative to the character, not to the origin).

Here is the updated working code. I hope this helps anyone who might be having the same problem (I commented out the wall colliders for the time being):

 var velocity = Vector2(0, 0);
 var maxVelocity = Vector2(0.35, 1.0);
 var gravity : float;
 var onGround = false;
 var onLeftWall = false;
 var onRightWall = false;
 var player : Transform;
 
 
 
 function FixedUpdate () {
     //Limits the speed to the maxVelocity
     if (velocity.x > maxVelocity.x) velocity.x = maxVelocity.x;
     else if (velocity.x < -maxVelocity.x) velocity.x = -maxVelocity.x;
     
     if (velocity.y < -maxVelocity.y) velocity.y = -maxVelocity.y;
     
     //Instatiate the raycast variables
     var LFloorRay = new Ray(collider.bounds.center - collider.bounds.extents + Vector3(0,1,0), Vector3.down);
     var LFloorHit : RaycastHit;
     var LFloorWallRay = new Ray(collider.bounds.center - collider.bounds.extents, Vector3.left);
     var LFloorWallHit : RaycastHit;
     var RFloorRay = new Ray(collider.bounds.center - Vector3(-collider.bounds.extents.x, collider.bounds.extents.y,0) + Vector3(0,1,0), Vector3.down);
     var RFloorHit : RaycastHit;
     var RFloorWallRay = new Ray(collider.bounds.center - Vector3(-collider.bounds.extents.x, collider.bounds.extents.y,0), Vector3.right);
     var RFloorWallHit : RaycastHit;
     var AbsVelocityY = Mathf.Abs(velocity.y) + 1;
     //Debug.DrawLine (LFloorRay.origin, Vector3(LFloorRay.origin.x, LFloorRay.origin.y - AbsVelocityY, LFloorRay.origin.z), Color.red);
     //check to see if the Bottom Left Floor raycast hits a "Solid" platform
     if (Physics.Raycast (LFloorRay, LFloorHit, AbsVelocityY))
 {
     
     if (LFloorHit.collider.gameObject.CompareTag("Solid"))
     {
         Debug.DrawLine (LFloorRay.origin, LFloorHit.point, Color.red);
         if (onGround == false)
         {
             onGround = true;
             velocity.y = 0; //If it hits a "Solid" platform, then make its vertical speed 0
             //and place the object ontop of the platform, but only if it wasn't already on a solid platform
             player.position = Vector3(player.position.x, LFloorHit.point.y + collider.bounds.extents.y, player.position.z);
         }        //LFloorHit.point.y + (-collider.bounds.center.y + collider.bounds.extents.y)
         
     }
     else //if the object is not "Solid", then ignore it
     {    
         onGround = false;
         velocity.y -= gravity * Time.deltaTime;
         
     }//If bottom left doesn't hit, check the bottom right
 } else if (Physics.Raycast (RFloorRay, RFloorHit, AbsVelocityY))
 {
     
     if (RFloorHit.collider.gameObject.CompareTag("Solid"))
     {
         Debug.DrawLine (RFloorRay.origin, RFloorHit.point, Color.red);
         if (onGround == false)
         {
             onGround = true;
             velocity.y = 0; //same as above
             player.position = Vector3(player.position.x, RFloorHit.point.y + collider.bounds.extents.y, player.position.z);
         }
         
     }
     else
     {
         onGround = false;
         velocity.y -= gravity * Time.deltaTime;
         
     }
 } else { //if nothing is hit by either raycast, apply gravity.
 onGround = false;
 velocity.y -= gravity * Time.deltaTime;
 }
 
     /*//Wall collision, checks to see if the player has touched a wall on their left side
     if (Physics.Raycast (LFloorWallRay.origin, Vector3.left, LFloorWallHit, 0.3))
 {
     if (LFloorWallHit.collider.gameObject.CompareTag("Solid"))
     {
         Debug.DrawLine (LFloorWallRay.origin, LFloorWallHit.point, Color.red);
         if (onLeftWall) {if (velocity.x < 0) velocity.x = 0;} else //if they are touching a wall, don't allow them to go
                                                                     //any further in that direction
         if (onLeftWall == false){
         onLeftWall = true; //If they aren't touching a wall, place them beside the wall.
         player.position = Vector3(LFloorWallHit.point.x + (collider.bounds.center.x + collider.bounds.extents.x),player.position.y, player.position.z);
         }
         
     } else {
         onLeftWall = false;
     }        
 } else onLeftWall = false;
 
     //same as above except for the right side instead of the left
     if (Physics.Raycast (RFloorWallRay.origin, Vector3.right, RFloorWallHit, 0.3))
 {
     if (RFloorWallHit.collider.gameObject.CompareTag("Solid"))
     {
         Debug.DrawLine (RFloorWallRay.origin, RFloorWallHit.point, Color.red);
         if (onRightWall) {if (velocity.x > 0) velocity.x = 0;} else
         if (onRightWall == false){
         onRightWall = true;
         player.position = Vector3(RFloorWallHit.point.x - (collider.bounds.center.x + collider.bounds.extents.x),player.position.y, player.position.z);
         }
         
     } else {
         onRightWall = false;
     }
 } else onRightWall = false;*/
 
     //change the player's position depending on the calculated velocities
     transform.position.x += velocity.x;
     transform.position.y += velocity.y;
 }