[Serusers] auth_radius won't loaded

Hello, I'm trying to buld a system of SER with radius support. I use Redhat 9 and radiusclient-ng-0.5.2. In my system, I installed SER 0.9.5 and freeRADIUS 1.1.1. I was able installing all of them succesfully. After I configure SER to have the radius support, I get this error message when I try to start SER: 0(5071) ERROR: load_module: could not open module </usr/local/lib/ser/modules/auth_radius.so>: libradiusclient-ng.so.2: cannot open shared object file: No such file or directory 0(5071) parse error (32,13-14): failed to load module 0(5071) parse error (89,32-33): unknown command, missing loadmodule? I have checked the SER modules in my system, and there is auth_radius.so in /usr/local/lib/ser/modules. I also checked the libradiusclient library, and there is libradiusclient-ng.so.2 in /usr/local/lib. I don't know what's wrong with my system. Below is my ser.cfg file. Is there anybody that can give some help? # ----------- global configuration parameters ------------------------ debug=3 # debug level (cmd line: -dddddddddd) fork=yes log_stderror=no # (cmd line: -E) check_via=no # (cmd. line: -v) dns=no # (cmd. line: -r) rev_dns=no # (cmd. line: -R) port=5060 children=4 fifo="/tmp/ser_fifo" # ------------------ module loading ---------------------------------- loadmodule "/usr/local/lib/ser/modules/mysql.so" loadmodule "/usr/local/lib/ser/modules/sl.so" loadmodule "/usr/local/lib/ser/modules/tm.so" loadmodule "/usr/local/lib/ser/modules/rr.so" loadmodule "/usr/local/lib/ser/modules/maxfwd.so" loadmodule "/usr/local/lib/ser/modules/usrloc.so" loadmodule "/usr/local/lib/ser/modules/registrar.so" loadmodule "/usr/local/lib/ser/modules/textops.so" loadmodule "/usr/local/lib/ser/modules/auth.so" loadmodule "/usr/local/lib/ser/modules/auth_radius.so" # ----------------- setting module-specific parameters --------------- # -- usrloc params -- #modparam("usrloc", "db_mode", 0) modparam("usrloc", "db_mode", 2) # -- auth params -- # modparam("auth_radius", "radius_config", "/usr/local/etc/radiusclient-ng/radiusclient.conf") # #modparam("auth_db", "calculate_ha1", yes) # #modparam("auth_db", "password_column", "password") # # -- rr params -- # add value to ;lr param to make some broken UAs happy modparam("rr", "enable_full_lr", 1) # ------------------------- request routing logic ------------------- # main routing logic route{ if (!mf_process_maxfwd_header("10")) { sl_send_reply("483","Too Many Hops"); break; }; if (msg:len >= 2048 ) { sl_send_reply("513", "Message too big"); break; }; if (!method=="REGISTER") record_route(); if (loose_route()) { append_hf("P-hint: rr-enforced\r\n"); route(1); break; }; if (!uri==myself) { append_hf("P-hint: outbound\r\n"); route(1); break; }; if (uri==myself) { if (method=="REGISTER") { if (!www_authorize("bohr.ee.net", "subscriber")) { www_challenge("bohr.ee.net", "0"); break; }; save("location"); break; }; lookup("aliases"); if (!uri==myself) { append_hf("P-hint: outbound alias\r\n"); route(1); break; }; if (!lookup("location")) { sl_send_reply("404", "Not Found"); break; }; }; append_hf("P-hint: usrloc applied\r\n"); route(1); } route[1] { if (!t_relay()) { sl_reply_error(); }; }