got an error when i run webapp.py

[rathinam8920]

(base) root@rcascl4-16:/home/administrator/Desktop/hms/system# python3 WebApp.py
/usr/bin/env: ‘th’: No such file or directory
Traceback (most recent call last):
File "WebApp.py", line 39, in
HomeSurveillance = SurveillanceSystem.SurveillanceSystem()
File "/home/administrator/Desktop/hms/system/SurveillanceSystem.py", line 126, in init
self.recogniser = FaceRecogniser.FaceRecogniser()
File "/home/administrator/Desktop/hms/system/FaceRecogniser.py", line 91, in init
(self.le, self.clf) = pickle.load(f) # Loads labels and classifier SVM or GMM
TypeError: a bytes-like object is required, not 'str'

please help to solve