Hey!

Nice to meet you
I have the same question in my mind, Because of recently I faced this issue and also I wanna know How we can fix Drupal core issues easily? I’m not familiar with Drupal site, that’s why I unable to update the code, can anyone please let me know if we update the core, what will happen? the site will be crash or we can move further without any errors? it would be a great help if anyone clarifies in this regard.