about performance analysis error

[mhmt_ali]

I am preparing a strengthening project in the project of a school built in 1976, which I have given below. I entered all the values, but when I perform a performance analysis, it gives the warning "Cannot analyze. At least one column or curtain object must be defined on each floor" How can i solve this.

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[YasinTezel]

The 4th Floor appears to be empty in your project. No elements are defined on this floor. You can analyze by deleting the 4th floor in the floor general settings.