[SR-Users] Load new module in Kamailio

Hello all, I would like to ask, how can I load new module in Kamailio 4.1.2? Actually, I have an issue, when I tried to compile my kamaiio.cfg I've got error: root@kamailio:/usr/local/# kamailio -c kamailio.cfg loading modules under /usr/local/lib64/kamailio/modules/ 0(25392) ERROR: <core> [sr_module.c:587]: load_module(): ERROR: load_module: could not find module <websocket> in </usr/local/lib64/kamailio/modules/> 0(25392) : <core> [cfg.y:3408]: yyerror_at(): parse error in config file /usr/local/etc/kamailio/kamailio.cfg, line 323, column 12-25: failed to load module 0(25392) ERROR: <core> [cfg.y:3272]: yyparse(): cfg. parser: failed to find command ws_handle_handshake 0(25392) : <core> [cfg.y:3411]: yyerror_at(): parse error in config file /usr/local/etc/kamailio/kamailio.cfg, line 1083, column 27: unknown command, missing loadmodule? ERROR: bad config file (2 errors) when I look physically to the /usr/local/lib64/kamailio/modules/ there is some modules, but websocket.so is missing. So, how can I get and load module in Kamailio? Thank you for help! BR, Patrik Kristel