Kannel Server is giving me this error on /var/log/kannel/smsmodem.log
I have a Centos 7 server with kannel-1.4.4
2020-07-23 17:39:00 [4245] [6] ERROR: System error 13: Permission denied
2020-07-23 17:39:00 [4245] [6] ERROR: AT2[modemgsm]: Couldn't connect (retrying in 10 seconds).