hello, our friends in the forum who are much more knowledgeable than me will give information about the subject, I can say a few things, strong column control is required in systems with high ductility level, column-beam cutting safety control is therefore necessary, you can enlarge your column sections to overcome this problem, your your beam sections are quite large compared to the columns, the strong column-weak beam error is due to this reason, I will take a look at your project again tomorrow regarding the span.