Having problems with loading a mesh and adding it to scene

so what im trying to do here is add get the bullet entity
then add a mesh and a texture to it and after that clone it however many times the json file says to add bullets and add them to the screen then its supposed to teleport them to the right locations the script is called gunController.js and the weapons.json is here

so what im trying to do here is add get the bullet entity
then add a mesh and a texture to it and after that clone it however many times the json file says to add bullets and add them to the screen then its supposed to teleport them to the right locations the script is called gunController.js and the weapons.json is here

hey can someone plz help