how fix it

[0x0Mr]

Traceback (most recent call last):
File "/usr/share/vulnx/vulnx.py", line 158, in
detection()
File "/usr/share/vulnx/vulnx.py", line 113, in detection
instance.instanciate()
File "/usr/share/vulnx/modules/detector.py", line 146, in instanciate
instance.exploit()
File "/usr/share/vulnx/modules/executor/Wordpress.py", line 30, in exploit
return wpx.wpexploits()
^^^^^^^^^^^^^^^^
File "/usr/share/vulnx/modules/exploits/wordpress_exploits.py", line 635, in wpexploits
self.exploit_state(self.wp_wysija())
^^^^^^^^^^^^^^^^
File "/usr/share/vulnx/modules/exploits/wordpress_exploits.py", line 497, in wp_wysija
shell = open('shell/VulnX.php', 'rb')
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
FileNotFoundError: [Errno 2] No such file or directory: 'shell/VulnX.php'