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### Start up failed with error " waiting for child one too long"

execute start up command, and suddenly failed.

` sudo /usr/local/sbin/kamailio -m 128 -M 8 -E -e -dd -f /usr/local/etc/kamailio/kamailio.cfg `

### Troubleshooting

#### Reproduction

Maybe the problem of my env.

#### Debugging Data

#### Log Messages

the log:

0(2749) INFO: <core> [core/sctp_core.c:74]: sctp_core_check_support(): SCTP API not enabled - if you want to use it, load sctp module Listening on udp: 192.168.5.167:5061 Aliases: udp: 192.168.5.167:5061

0(2749) INFO: <core> [core/tcp_main.c:5218]: init_tcp(): using epoll_lt as the io watch method (auto detected) 0(2751) INFO: rr [../outbound/api.h:53]: ob_load_api(): unable to import bind_ob - maybe module is not loaded 0(2751) INFO: rr [rr_mod.c:185]: mod_init(): outbound module not available 0(2751) WARNING: db_mysql [km_my_con.c:187]: db_mysql_new_connection(): opt_ssl_ca option not supported by mysql version (value (null)) - ignoring 0(2751) INFO: auth [auth_mod.c:342]: mod_init(): qop set, but nonce-count (nonce_count) support disabled 0(2751) WARNING: db_mysql [km_my_con.c:187]: db_mysql_new_connection(): opt_ssl_ca option not supported by mysql version (value (null)) - ignoring 0(2751) WARNING: tls [tls_mod.c:364]: mod_init(): tls support is disabled (set enable_tls=1 in the config to enable it) 0(2751) INFO: <core> [main.c:3233]: main(): processes (at least): 24 - shm size: 134217728 - pkg size: 8388608 0(2751) INFO: <core> [core/udp_server.c:163]: probe_max_receive_buffer(): SO_RCVBUF is initially 16777216 for fd 9 0(2751) INFO: <core> [core/udp_server.c:233]: probe_max_receive_buffer(): SO_RCVBUF is finally 16777216 on fd 9 0(2751) INFO: <core> [core/udp_server.c:264]: probe_max_send_buffer(): SO_SNDBUF is initially 16777216 for fd 9 0(2751) INFO: <core> [core/udp_server.c:334]: probe_max_send_buffer(): SO_SNDBUF is finally 16777216 on fd 9 1(2754) WARNING: db_mysql [km_my_con.c:187]: db_mysql_new_connection(): opt_ssl_ca option not supported by mysql version (value (null)) - ignoring 1(2754) NOTICE: ndb_redis [redis_client.c:257]: redisc_init(): Connecting to 10.20.80.33:6380 0(2751) ERROR: <core> [main.c:1825]: main_loop(): waiting for child one too long - wait time: 1000000 1(2754) INFO: <core> [main.c:888]: sig_usr(): signal 15 received 0(2751) INFO: snmpstats [snmpstats.c:399]: mod_destroy(): The SNMPStats module got the kill signal 0(2751) INFO: snmpstats [snmpstats.c:403]: mod_destroy(): Shutting down the AgentX Sub-Agent! 0(2751) INFO: <core> [core/sctp_core.c:53]: sctp_core_destroy(): SCTP API not initialized`

what does that mean? ` 0(2751) ERROR: <core> [main.c:1825]: main_loop(): waiting for child one too long - wait time: 1000000` How can I solve that?

#### SIP Traffic

### Possible Solutions

### Additional Information

* **Operating System**: ` LSB Version: :core-4.1-amd64:core-4.1-noarch Distributor ID: CentOS Description: CentOS Linux release 7.9.2009 (Core) Release: 7.9.2009 Codename: Core `

Kamailio-5.8.2