I can't get into my minecraft. It just says "Sorry! Make sure you are online and try again"

I can't get into my minecraft. It just says "Sorry! Make sure you are online and try again". I'm online and this problem appeared yesterday. I've had no problems with the launcher beforehand. I've tried the solutions posted on other posts like this but they haven't worked. This is my first time with any problems that I couldn't fix myself and I'm not computer savvy, sorry apologies in advance. I put my "launcher_log.txt" in the attachments, so hopefully someone will give me a proper answer soon!