Your post contains too little information. At the very least I would have expected you to post what the god-damned warning was.
Log contains 18,500 lines. Its the haystack, and you are expecting someone to find your needle?
This thread is dead until you provide more context.
OK, fine. The warning was generic, said there was a problem with the upgrade, should seek help on the forum, from the version on the myOSMC screen it looks up to date. Furthermore, I find no issues with it at the moment. If you feel this is the appropriate action then I will re-build if I find an issue further down the line. Thank you so much.