Allow empty subscription table

src/Utils/__init__.py

@@ -137,9 +137,12 @@ def get_subscriptions(basepath: str = BASEPATH,
     con = sqlite3.connect(fullpath)
     cur = con.cursor()
     select_query = '''SELECT * FROM {}'''.format(SUB_TABLE)
+    try:
         cur.execute(select_query)
         for result in cur.fetchall():
             subscriptions.append(result)
+    except sqlite3.OperationalError:
+        pass
     return subscriptions