[SR-Users] Unable to use json module

Hello All, I am getting the below error , when ever i try to use json.so module for kamailio. I have compiled and installed with json.so however this error occurs. 0(20153) ERROR: <core> [sr_module.c:576]: load_module(): could not open module </usr/local/kamailio//lib64/kamailio/modules/json.so>: /usr/local/kamailio//lib64/kamailio/modules/json.so: undefined symbol: is_error 0(20153) : <core> [cfg.y:3365]: yyerror_at(): parse error in config file /usr/local/kamailio/etc/kamailio/cc_kamailio/basic.cfg, line 69, column 12-20: failed to load module ERROR: bad config file (1 errors) The kamailio version I am using is : version: kamailio 4.4.0-pre0 (x86_64/linux) 4e7573 Please let me know, how can i proceed here. Thanking You, Sunil More Ph : 9503338275