1) create a new patient record
2) don't enter any information, click "save and view summary"
3) the "medication" section will be displayed with a table that has a single empty row. it should not be displayed at all, since there is no medication data.
You need to install the medication extension first, go to Administration -> Extension Manager -> Add Extensions, and install "Medication data 1.3.6".
This is not an issue in the code, it seems that there's a problem on playground only, where some new objects were added to the template, most likely by a bot. The issue to investigate is why can anybody edit the patient template...