For those who already have the vuejs,
Step 1 : Download the file according to your PHP and WHMCS version
Step 2: Open the Vue.js WHMCS order form folder. You will find the 'order' folder. Replace all the files in your setup with these. In the screenshot, we named it 'order,' but adjusted it as per your naming convention.
Step 3: Now go to the config_opc.new file and edit it.
Step 4: Go to the below file (config_opc.new.js) and copy this code and paste it to config_opc.js
Step 5: Replace the addon "vueWhmcsCart" folder with WHMCS (whmcs_root/modules/addons/)
