Fix issue selecting a new exercise

db.py

@@ -460,22 +460,23 @@ class DataBase():
             SELECT 
                 t.repetitions, 
                 t.weight,
-                e.name as "exercise_name"
+                e.name AS "exercise_name"
             FROM 
-                topset t JOIN workout w ON t.workout_id = w.workout_id
-                JOIN exercise e ON t.exercise_id = e.exercise_id
+                exercise e 
+                LEFT JOIN topset t ON e.exercise_id = t.exercise_id
+                LEFT JOIN workout w ON t.workout_id = w.workout_id
             WHERE 
-                w.person_id = %s AND t.exercise_id = %s
+                e.exercise_id = %s AND (w.person_id = %s OR w.person_id IS NULL)
             ORDER BY 
                 w.start_date DESC
             LIMIT 1;
-        """, [person_id, exercise_id], one=True)
+        """, [exercise_id, person_id], one=True)
 
         if not topset:
             return None
         else:
-            return (topset['repetitions'], topset['weight'], topset['exercise_name'])
-
+            return (topset.get('repetitions'), topset.get('weight'), topset['exercise_name'])
+    
     def get_all_exercises(self):
         exercises = self.execute(
             'SELECT exercise_id, name FROM exercise')