Thanks for your attention and replies. I switched to branch 5.6 but the module jwt was not installed
jwt_mod.c:28:10: fatal error: jwt.h: No such file or directory 28 | #include <jwt.h> | ^~~~~~~ compilation terminated. make[2]: *** [../../Makefile.rules:100: jwt_mod.o] Error 1 make[2]: Leaving directory '/usr/local/src/kamailio/src/modules/jwt' make[1]: *** [Makefile:511: modules] Error 1 make[1]: Leaving directory '/usr/local/src/kamailio/src' make: *** [Makefile:34: all] Error 2