[Koha] How to resolve bug Bug 28267? What must I do in mysql?

Dear all, I'm not a developer, and as I mentioned before, I'm stuck with an inoperable library catalogue due to the fact that I can't update to the latest version because "Older databases fail to upgrade due to having a row format other than "DYNAMIC"". https://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=28267 I've read the comments on this bug but I fail to understand what I should do to fix this. Obviously I must login to mysql and perform some actions. What actions are those? Can someone point me to detailed instructions? Kind regards, Dimitrios Dalagiorgos 3rd high school of Kozani