Yealink T4XG phones will not autoprovision over HTTPS with FreePBX 14

[root@pbx ~]# ls -l /var/log/httpd
total 46104
-rw-r--r--  1 root root  6784013 Oct  6 10:31 access_log
-rw-r--r--  1 root root   101243 Sep 11 03:24 access_log-20170911
-rw-r--r--  1 root root   908614 Sep 17 03:23 access_log-20170917
-rw-r--r--  1 root root  1014085 Sep 25 09:25 access_log-20170925
-rw-r--r--  1 root root 38078761 Oct  1 03:37 access_log-20171001
-rw-r--r--  1 root root     2742 Oct  5 10:05 error_log
-rw-r--r--  1 root root    12883 Sep 11 03:47 error_log-20170911
-rw-r--r--  1 root root     8360 Sep 17 06:59 error_log-20170917
-rw-r--r--  1 root root     3305 Sep 25 09:29 error_log-20170925
-rw-r--r--  1 root root     1587 Oct  1 03:37 error_log-20171001
-rw-r--r--  1 root root        0 Oct 16  2016 ssl_access_log
-rw-r--r--. 1 root root    21393 Oct  2  2016 ssl_access_log-20161002
-rw-r--r--  1 root root    59064 Oct  9  2016 ssl_access_log-20161009
-rw-r--r--  1 root root     8669 Oct 10  2016 ssl_access_log-20161016
-rw-r--r--  1 root root        0 Oct 16  2016 ssl_error_log
-rw-r--r--. 1 root root    10997 Oct  2  2016 ssl_error_log-20161002
-rw-r--r--  1 root root    14011 Oct  9  2016 ssl_error_log-20161009
-rw-r--r--  1 root root     1947 Oct 10  2016 ssl_error_log-20161016
-rw-r--r--  1 root root        0 Oct 16  2016 ssl_request_log
-rw-r--r--. 1 root root    23391 Oct  2  2016 ssl_request_log-20161002
-rw-r--r--  1 root root    69536 Oct  9  2016 ssl_request_log-20161009
-rw-r--r--  1 root root     9621 Oct 10  2016 ssl_request_log-20161016