Rendering works but somthing's wrong with the indexing

legacy/resources/shaders/phong.vert

@@ -1,21 +1,18 @@
 #version 330 
 
-in vec3 position;
-in vec3 normal;
+layout(location = 0) in vec3 position;
+layout(location = 1) in vec3 normal;
+layout(location = 2) in vec3 texCoord;
 
 out vec3 Normal;
 out vec3 FragPos;
-out vec4 FragPosLightSpace;
 
 uniform mat4 model;
 uniform mat4 view;
 uniform mat4 proj;
 
-uniform mat4 lightSpaceMatrix;
-
 void main() {
     gl_Position = proj * view * model * vec4(position, 1.0);
     FragPos = vec3(model * vec4(position, 1.0));
-    FragPosLightSpace = lightSpaceMatrix * vec4(FragPos, 1.0);
     Normal = mat3(model) * normal;
 }