My Twitch/Badlion Minecraft doesnt load up

Yesterday i wanted to play RLCraft i clicked play and then launch , but the launcher closed and didnt oppened the loading screen!

My BadLion client had to update but it gave a (error updating jar. -29)

A person from technical support tried fixing it but he didnt succeed .

I think its from my java but i really don't know!

Can i get any help ?

Thank you for reading this!