Can not start sems service as expected

Hi,
I setup yeti-web and sems on debian 9.8.0. After installing sems and sems-modules-* as the link https://yeti-switch.org/docs/en/installation/sems.html#install-packages, then I start “service sems start” but it doesn’t work as expected. I traced logs and found the “sbc.so” file is missing in the /usr/lib/sems/plug-in directory:

Apr 1 04:32:43 ATLSBC01 sems[31919]: [31919/31919] [core/AmPlugIn.cpp:675] WARNING: codec 28 does not provide bytes2samples function
Apr 1 04:32:43 ATLSBC01 sems[31919]: [31919/31919] [core/AmPlugIn.cpp:678] WARNING: codec 28 does not provide samples2bytes function
Apr 1 04:32:43 ATLSBC01 sems[31919]: [31919/31919] [core/AmPlugIn.cpp:675] WARNING: codec 27 does not provide bytes2samples function
Apr 1 04:32:43 ATLSBC01 sems[31919]: [31919/31919] [core/AmPlugIn.cpp:678] WARNING: codec 27 does not provide samples2bytes function
Apr 1 04:32:43 ATLSBC01 sems[31919]: [31919/31919] [core/AmPlugIn.cpp:675] WARNING: codec 26 does not provide bytes2samples function
Apr 1 04:32:43 ATLSBC01 sems[31919]: [31919/31919] [core/AmPlugIn.cpp:678] WARNING: codec 26 does not provide samples2bytes function
Apr 1 04:32:43 ATLSBC01 sems[31919]: [31919/31919] [core/AmPlugIn.cpp:299] ERROR: AmPlugIn::loadPlugIn: /usr/lib/sems/plug-in//sbc.so: /usr/lib/sems/plug-in//sbc.so: cannot open shared object file: No such file or directory
Apr 1 04:32:43 ATLSBC01 sems[31919]: [31919/31919] [core/AmPlugIn.cpp:234] ERROR: while loading plug-in ‘/usr/lib/sems/plug-in//sbc.so’
Apr 1 04:32:43 ATLSBC01 sems[31919]: [31919/31919] [core/sems.cpp:699] INFO: Disposing plug-ins
Apr 1 04:32:43 ATLSBC01 sems[31919]: [31919/31919] [core/sems.cpp:531] ERROR: Child [1] return an error: -1
Apr 1 04:32:43 ATLSBC01 sems[31919]: [31919/31919] [core/sems.cpp:699] INFO: Disposing plug-ins
Apr 1 04:32:43 ATLSBC01 sems[31919]: [31919/31919] [core/sems.cpp:719] INFO: Exiting (failure)
Apr 1 04:32:43 ATLSBC01 sems[31919]: [31919/31919] [core/sems.cpp:719] INFO: Exiting (failure)

Please help me this issue for starting sems service.
Thanks advance,

Your sems.conf is wrong - sbc module is not required for Yeti.
Please complete your installation using configuration files from documentation https://yeti-switch.org/docs/en/installation/sems.html#configuration-files

I got it.
Thank Dmitry

Hi Dmitry,
I am newbie on Yeti-switch so I still got an error as below:

Apr 2 11:15:54 ATLSBC01 sems[30200]: [30202/30230] [apps/sctp_bus/SctpClientConnection.cpp:103] INFO: connected to 10.9.9.42:4444/-1 (44)
Apr 2 11:15:54 ATLSBC01 sems[30200]: [30202/30230] [apps/sctp_bus/SctpClientConnection.cpp:180] INFO: SCTP_ASSOC_CHANGE: 17. remote: 10.9.9.42:4444
Apr 2 11:15:54 ATLSBC01 sems[30200]: [30202/30231] [yeti:yeti.cpp:329] ERROR: cfg error from server: 404 unknown node
Apr 2 11:15:54 ATLSBC01 sems[30200]: [30200/30200] [yeti:SBC.cpp:148] ERROR: yeti configuration error
Apr 2 11:15:54 ATLSBC01 sems[30200]: [30202/30231] [yeti:yeti.cpp:257] INFO: yeti-worker finished
Apr 2 11:15:54 ATLSBC01 sems[30200]: [30202/30231] [core/AmThread.cpp:92] INFO: Thread yeti-worker 140710387189504 is ending.
Apr 2 11:15:54 ATLSBC01 sems[30200]: [30200/30200] [core/sems.cpp:699] INFO: Disposing plug-ins
Apr 2 11:15:54 ATLSBC01 sems[30200]: [30200/30200] [yeti:SqlRouter.cpp:75] INFO: SqlRouter instance[0x565211372940] destroyed
Apr 2 11:15:54 ATLSBC01 sems[30200]: [30200/30200] [core/sems.cpp:719] INFO: Exiting (failure)
Apr 2 11:15:54 ATLSBC01 sems[30200]: [30200/30200] [core/sems.cpp:531] ERROR: Child [1] return an error: -1
Apr 2 11:15:54 ATLSBC01 sems[30200]: [30200/30200] [core/sems.cpp:699] INFO: Disposing plug-ins
Apr 2 11:15:54 ATLSBC01 sems[30200]: [30200/30200] [core/sems.cpp:719] INFO: Exiting (failure)

Please help me how to resolve it.
Thank you.

I resolved this issue.
Thank you for your support.