Game Maker camera does not work after update

Question

I’m doing a game like The Legend Of Zelda in Game Maker Studio 2 but I ended up formatting the pc and when I installed GMS2 again an error started to appear on the Camera Object that was working properly before and without problems, I tried to look at my code where the Game Maker pointed to have an error but the code is right, in my point of view it did not seem to have errors

Step Event

if (object_exists(follow)){
CamTargetX = follow.x;
CamTargetY = follow.y;

}

x+=(CamTargetX - x)/CamSpd;
y+=(CamTargetY - y)/CamSpd;

camera_set_view_pos(cam, x-w_half, y-h_half);

Create

    cam = view_camera[0];
follow = obj_player
w_half = camera_get_view_width(cam) / 2;
h_half = camera_get_view_height(cam) / 2;
CamTargetX = xstart;
CamTargetY = ystart;
CamSpd = 25;

EDIT

I tried to look at the index line 24 but the Ob_camera does not reach the line 24 until I looked at the code of the Obj_player but the line 24 is just a command to change the Sprite depending on the direction the player is moving.