Options for payload/cmd/unix/python/exec:
=========================

/usr/share/metasploit-framework/modules/payloads/singles/python/exec.rb:39:in `command_string': undefined method `include?' for nil (NoMethodError)
	from /usr/share/metasploit-framework/modules/payloads/singles/python/exec.rb:32:in `generate'
	from /usr/share/metasploit-framework/modules/payloads/adapters/cmd/unix/python.rb:34:in `generate'
	from /usr/share/metasploit-framework/lib/msf/core/payload.rb:195:in `size'
	from /usr/share/metasploit-framework/lib/msf/base/serializer/readable_text.rb:500:in `dump_payload_module'
	from /usr/share/metasploit-framework/lib/msf/base/serializer/readable_text.rb:26:in `dump_module'
	from /usr/bin/msfvenom:461:in `<main>'