minor: direction

app/app.py

@@ -304,7 +304,8 @@ async def getUserCDR(user,
                      offset=None,
                      order='ASC'):
   _q = f'''SELECT * FROM cdr AS c INNER JOIN (SELECT linkedid FROM cdr WHERE'''
-  direction=direction.lower()
+  if direction:
+    direction=direction.lower()
   if direction in ('in', True, '1', 'incoming', 'inbound'):
     direction = 'inbound'
     _q += f''' dst="{user}"'''