Tentando rowspan

server/services/eventos.js

@@ -23,7 +23,7 @@ _out.println('<div style="display: flex; justify-content: center; margin-top: 80
 
             for (const dbRecord of dbRecords) {
 
-                 const cat = copiaDbRecords.filter(r => r.getString("categoria") == dbRecord.getString("categoria"))
+                 const cat = copiaDbRecords.filter(r => r.getString("categoria") === dbRecord.getString("categoria"))
                     
                 _out.println('<tr style="height: 35px;">')
                     _out.println(`<td>${dbRecord.getString("titulo")}</td>`)