/usr/bin/lua5.3: /usr/local/share/lua/5.3/wsapi/common.lua:299: attempt to index a nil value (local 'headers')
stack traceback:
	/usr/local/share/lua/5.3/wsapi/common.lua:299: in function 'wsapi.common.run'
	/usr/local/share/lua/5.3/wsapi/cgi.lua:19: in function 'wsapi.cgi.run'
	/usr/local/lib/luarocks/rocks-5.3/wsapi/1.7-1/bin/wsapi.cgi:25: in main chunk
	[C]: in ?