I downloaded LabyMod last year. And now I have a problem. I can no longer start minecraft with Labymod. With everyone else I can start Minecraft except with Labymod there's only this message or what that is:
Then stop using LabyMod. Finished.
Or you bring your Java up to date.
https://cutearn.net/QErv
here you will find your answer he does it in detail and you will understand it easily.