Does not work in lua mode

[CriztianiX]

Using this plugin in lua mode with:

app:enable("exception_tracking")

i get:

2015/11/16 15:39:13 [error] 5315#0: *1 lua entry thread aborted: runtime error: ...ocal/share/lua/5.1/lapis/features/exception_tracking.lua:11: attempt to index field '__base' (a nil value) stack traceback: coroutine 0: [C]: in function 'require' /usr/local/share/lua/5.1/lapis/init.lua:15: in function 'serve' content_by_lua(nginx.conf.compiled:29):2: in function <content_by_lua(nginx.conf.compiled:29):1>, client: 10.0.2.2, server: , request: "GET /api/v2/estates HTTP/1.1", host: "127.0.0.1:28080"