We cannot provide technical support over our forums. If you need help with this issue, please contact us via email so we can fix it for you. https://www.vape.gg/contact/
Also, try disabling your JVM arguments and then running again. Also make sure that you are using a compatible MC / Forge version for the Vape Client (v3 or Lite) you are trying to use. Contact us if you need any more help.