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### Description

<!-- Explain what you did, what you expected to happen, and what actually happened. --> nat module crashes if app_lua initialize fail. ### Troubleshooting

#### Reproduction

<!-- If the issue can be reproduced, describe how it can be done. -->

kamailio.cfg

```txt ### kamailio5.6.4

debug=2 log_stderror=no memdbg=5 memlog=5 log_facility=LOG_LOCAL0 log_prefix="{$mt $hdr(CSeq) $ci} " children=4 auto_aliases=no enable_sctp=no # listen=udp:192.168.31.63:5060

# mpath="/usr/local/lib/kamailio/modules/"

loadmodule "kex.so" loadmodule "corex.so" loadmodule "tm.so" loadmodule "tmx.so" loadmodule "sl.so" loadmodule "pv.so" loadmodule "xlog.so" loadmodule "ctl.so" loadmodule "cfg_rpc.so"

loadmodule "nats.so" loadmodule "app_lua.so"

# modparam("ctl", "binrpc", "unix:/run/kamailio/kamailio_ctl")

modparam("nats", "nats_url", "nats://127.0.0.1:4222") modparam("nats", "num_publish_workers", 1) modparam("nats", "subject_queue_group", "sipserver:group")

modparam("app_lua", "load", "/etc/kamailio/kamailio.lua")

request_route { sl_send_reply("200", "OK"); } ```

kamailio.lua ```lua cjson = require "cjson" -- but without cjson ```

#### Debugging Data

<!-- If you got a core dump, use gdb to extract troubleshooting data - full backtrace, local variables and the list of the code at the issue location.

gdb /path/to/kamailio /path/to/corefile bt full info locals list

If you are familiar with gdb, feel free to attach more of what you consider to be relevant. -->

gdb kamailio core ```txt Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1". Core was generated by `kamailio'. Program terminated with signal SIGSEGV, Segmentation fault. #0 0x00007f6691e9c62b in ?? () from /lib/x86_64-linux-gnu/libuv.so.1 [Current thread is 1 (Thread 0x7f6692ac9740 (LWP 82969))]

bt #0 0x00007f6691e9c62b in ?? () from /lib/x86_64-linux-gnu/libuv.so.1 #1 0x00007f6691ea3856 in ?? () from /lib/x86_64-linux-gnu/libuv.so.1 #2 0x00007f6691ea398f in uv_poll_stop () from /lib/x86_64-linux-gnu/libuv.so.1 #3 0x00007f6691f48b81 in nats_destroy_workers () at nats_mod.c:601 #4 0x00007f6691f48c01 in mod_destroy () at nats_mod.c:614 #5 0x000055dad0bb4752 in destroy_modules () at core/sr_module.c:842 #6 0x000055dad0977132 in cleanup (show_status=0) at main.c:561 #7 0x000055dad0978d97 in shutdown_children (sig=15, show_status=0) at main.c:704 #8 0x000055dad0993c7b in main (argc=1, argv=0x7ffd4ca63688) at main.c:3093

bt full #0 0x00007f6691e9c62b in ?? () from /lib/x86_64-linux-gnu/libuv.so.1 No symbol table info available. #1 0x00007f6691ea3856 in ?? () from /lib/x86_64-linux-gnu/libuv.so.1 No symbol table info available. #2 0x00007f6691ea398f in uv_poll_stop () from /lib/x86_64-linux-gnu/libuv.so.1 No symbol table info available. #3 0x00007f6691f48b81 in nats_destroy_workers () at nats_mod.c:601 i = 0 worker = 0x7f668dceee10 pub_worker = 0x7f668dceeeb0 __func__ = "nats_destroy_workers" #4 0x00007f6691f48c01 in mod_destroy () at nats_mod.c:614 __func__ = "mod_destroy" #5 0x000055dad0bb4752 in destroy_modules () at core/sr_module.c:842 t = 0x7f6692368870 foo = 0x7f6692366d20 __func__ = "destroy_modules" #6 0x000055dad0977132 in cleanup (show_status=0) at main.c:561 memlog = 0 __func__ = "cleanup" #7 0x000055dad0978d97 in shutdown_children (sig=15, show_status=0) at main.c:704 __func__ = "shutdown_children" #8 0x000055dad0993c7b in main (argc=1, argv=0x7ffd4ca63688) at main.c:3093 cfg_stream = 0x55dad295c380 c = -1 r = 0 tmp = 0x100000000 <error: Cannot access memory at address 0x100000000> tmp_len = 0 port = 895 proto = 0 ahost = 0x0 aport = 0 options = 0x55dad0db4278 ":f:cm:M:dVIhEeb:l:L:n:vKrRDTN:W:w:t:u:g:P:G:SQ:O:a:A:x:X:Y:" ret = -1 seed = 193248401 rfd = 4 debug_save = 0 debug_flag = 0 dont_fork_cnt = 0 n_lst = 0xc000 p = 0x0 --Type <RET> for more, q to quit, c to continue without paging-- st = {st_dev = 22, st_ino = 830, st_nlink = 2, st_mode = 16832, st_uid = 0, st_gid = 0, __pad0 = 0, st_rdev = 0, st_size = 60, st_blksize = 4096, st_blocks = 0, st_atim = {tv_sec = 1679270080, tv_nsec = 182554285}, st_mtim = {tv_sec = 1679531455, tv_nsec = 805444368}, st_ctim = {tv_sec = 1679531455, tv_nsec = 805444368}, __glibc_reserved = {0, 0, 0}} tbuf = "\000\000\000\000\000\000\000\000\377\377\377\377\000\000\000\000x\230ْf\177\000\000кܒf\177", '\000' <repeats 42 times>, "pvْf\177\000\000\r\000\000\000\000\000\000\000\230\341ɒf\177\000\000\230\066\246L\375\177\000\000H\355\350\320\332U\000\000 \260ܒf\177\000\000\256\217ڒf\177\000\000\001", '\000' <repeats 15 times>, "x\230ْf\177\000\000\300\370ڒf\177\000\000\274\032\255\222f\177\000\000\000\066\246L\375\177\000\000\001", '\000' <repeats 15 times>, "\230\066\246L\375\177\000\000ڱڒf\177\000\000\000\000\000\000\000\000\000\000"... option_index = 0 long_options = {{name = 0x55dad0db66e6 "help", has_arg = 0, flag = 0x0, val = 104}, {name = 0x55dad0db1524 "version", has_arg = 0, flag = 0x0, val = 118}, { name = 0x55dad0db66eb "alias", has_arg = 1, flag = 0x0, val = 1024}, {name = 0x55dad0db66f1 "subst", has_arg = 1, flag = 0x0, val = 1025}, { name = 0x55dad0db66f7 "substdef", has_arg = 1, flag = 0x0, val = 1026}, {name = 0x55dad0db6700 "substdefs", has_arg = 1, flag = 0x0, val = 1027}, { name = 0x55dad0db670a "server-id", has_arg = 1, flag = 0x0, val = 1028}, {name = 0x55dad0db6714 "loadmodule", has_arg = 1, flag = 0x0, val = 1029}, { name = 0x55dad0db671f "modparam", has_arg = 1, flag = 0x0, val = 1030}, {name = 0x55dad0db6728 "log-engine", has_arg = 1, flag = 0x0, val = 1031}, { name = 0x55dad0db6733 "debug", has_arg = 1, flag = 0x0, val = 1032}, {name = 0x55dad0db6739 "cfg-print", has_arg = 0, flag = 0x0, val = 1033}, { name = 0x55dad0db6743 "atexit", has_arg = 1, flag = 0x0, val = 1034}, {name = 0x0, has_arg = 0, flag = 0x0, val = 0}} __func__ = "main"

```

#### Log Messages

<!-- Check the syslog file and if there are relevant log messages printed by Kamailio, add them next, or attach to issue, or provide a link to download them (e.g., to a pastebin site). -->

``` (paste your log messages here) ```

#### SIP Traffic

<!-- If the issue is exposed by processing specific SIP messages, grab them with ngrep or save in a pcap file, then add them next, or attach to issue, or provide a link to download them (e.g., to a pastebin site). -->

``` (paste your sip traffic here) ```

### Possible Solutions

<!-- If you found a solution or workaround for the issue, describe it. Ideally, provide a pull request with a fix. -->

### Additional Information

* **Kamailio Version** - output of `kamailio -v`

``` kamailio 5.6.4 (x86_64/linux) a004cf ```

* **Operating System**:

<!-- Details about the operating system, the type: Linux (e.g.,: Debian 8.4, Ubuntu 16.04, CentOS 7.1, ...), MacOS, xBSD, Solaris, ...; Kernel details (output of `lsb_release -a` and `uname -a`) -->

``` Debian11 ```