Hello @JosephThachilGeorge,
Great to see that you made progress!
Yes, we will completely drop support for Java 8 soon. See this announcement for more information.
Do you mean that the build failed with an unauthorized exception? In that case this points towards a wrongly encrypted value. Did you know there is a difference between travis-ci.org and travis-ci.com? Please see this guide to make sure that you are encrypting it correctly for your set-up.
Could you create a seperate topic for this issue? We’ll be happy to try to help you get to 100% coverage there.