Apr 06 21:01:16 modulemanager   error   Error initializing module 'compression' on 'localhost': error loading module 'zlib' from file '/usr/lib/lua/5.1/zlib.so':
        /usr/lib/lua/5.1/zlib.so: undefined symbol: luaL_prepbuffsize
stack traceback:
        /usr/lib/prosody/core/modulemanager.lua:35: in function </usr/lib/prosody/core/modulemanager.lua:35>
        [C]: ?
        [C]: in function '_real_require'
        /usr/lib/prosody/../../bin/prosody:155: in function 'require'
        /usr/lib/prosody/modules/mod_compression.lua:9: in main chunk
        (tail call): ?
        [C]: in function 'xpcall'
        /usr/lib/prosody/core/modulemanager.lua:35: in function 'pcall'
        /usr/lib/prosody/core/modulemanager.lua:129: in function 'load'
        /usr/lib/prosody/core/modulemanager.lua:88: in function '?'
        /usr/lib/prosody/util/events.lua:67: in function 'fire_event'
        /usr/lib/prosody/core/hostmanager.lua:84: in function 'activate'
        /usr/lib/prosody/core/hostmanager.lua:42: in function '?'
        /usr/lib/prosody/util/events.lua:67: in function 'fire_event'
        /usr/lib/prosody/../../bin/prosody:374: in function 'prepare_to_start'
        /usr/lib/prosody/../../bin/prosody:490: in main chunk
        [C]: ?