How do I fix a Webley Nemesis co2 leak?

I've had the Webley Nemesis exactly 6 months as of today and put 6 co2 cartridges in it always being careful not to over tighten it and today I loaded a co2 and I could hear a hissing sound so I removed it and put in another one and fired a couple of shots and then the hissing began again. I could feel the air coming through the breach end of the barrel and I could see a white substance coming through the breach. Is this gun user repairable? How good is Webley for their warranty work and does this sound like something that's covered? The gun was purchased from Pyramyd Air on March 21,2021. If it's not repairable maybe someone on the forum could use it for parts.
 
I have one in .22 but so far no real problems and never had mine apart so just random lame thoughts here. The white is likely the escaping CO2 hitting normal air. Random thought would be a bad o-ring not sealing when the new cartridge is installed but not knowing how the system inside there works, I honestly don't know.

Sorry I can't be more help other than maybe put a drop of pellgun oil on the tip of every cartridge before installing to see what happens??