Infinite recursion when run without correct permissions

[Phasip]

On latest git version
commit 25ee90ed9d65c42973be361d22f60b450d22b8dd (HEAD -> master, origin/master, origin/HEAD)

If I try to use the 'is_card_inserted' command without correct permissions it fails doing infinite recursion on getattr.

develop@ubuntu:~/LeiaStuff/smartleia$ python3
Python 3.8.5 (default, Jan 27 2021, 15:41:15) 
[GCC 9.3.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import smartleia as sl
>>> reader = sl.LEIA()
>>> reader.is_card_inserted()
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/home/develop/LeiaStuff/smartleia/smartleia/__init__.py", line 1023, in is_card_inserted
    self._send_command(b"?")
  File "/home/develop/LeiaStuff/smartleia/smartleia/__init__.py", line 1093, in _send_command
    self._testWaitingFlag()
  File "/home/develop/LeiaStuff/smartleia/smartleia/__init__.py", line 711, in _testWaitingFlag
    self.ser.read_all()
  File "/home/develop/LeiaStuff/smartleia/smartleia/__init__.py", line 1107, in __getattr__
    if hasattr(self.ser, attr):
  File "/home/develop/LeiaStuff/smartleia/smartleia/__init__.py", line 1107, in __getattr__
    if hasattr(self.ser, attr):
  File "/home/develop/LeiaStuff/smartleia/smartleia/__init__.py", line 1107, in __getattr__
    if hasattr(self.ser, attr):
  [Previous line repeated 993 more times]
RecursionError: maximum recursion depth exceeded

When running under sudo everything is nice and dandy.

develop@ubuntu:~/LeiaStuff/smartleia$ sudo python3
Python 3.8.5 (default, Jan 27 2021, 15:41:15) 
[GCC 9.3.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import smartleia as sl
>>> sl
KeyboardInterrupt
>>> reader = sl.LEIA()
read>>> reader.is_card_inserted()
True
>>> reader.is_card_inserted()
True
>>> reader.is_card_inserted()
False
>>> 

A clearer error would be preferable.