I recently upgraded to zc 1.5.6, php 7.0.33
I have slowly been getting rid of errors in the log folder, and I have had warnings set by sessions a few times now. I cleared out the log folder this morning, after fixing a few things, and it's currently the only file in there.

[17-Dec-2019 18:30:47 UTC] Request URI: /?worx=oxq, IP address: 69.163.224.109
#1 session_save_path() called at [/home1/redsauto/public_html/includes/functions/sessions.php:164]
#2 zen_session_save_path() called at [/home1/redsauto/public_html/includes/init_includes/init_sessions.php:33]
#3 require(/home1/redsauto/public_html/includes/init_includes/init_sessions.php) called at [/home1/redsauto/public_html/includes/autoload_func.php:48]
#4 require(/home1/redsauto/public_html/includes/autoload_func.php) called at [/home1/redsauto/public_html/includes/application_top.php:170]
#5 require(/home1/redsauto/public_html/includes/application_top.php) called at [/home1/redsauto/public_html/index.php:32]
--> PHP Warning: session_save_path(): Cannot change save path when headers already sent in /home1/redsauto/public_html/includes/functions/sessions.php on line 164.

[17-Dec-2019 18:30:47 UTC] Request URI: /?worx=oxq, IP address: 69.163.224.109
#1 session_set_cookie_params() called at [/home1/redsauto/public_html/includes/init_includes/init_sessions.php:44]
#2 require(/home1/redsauto/public_html/includes/init_includes/init_sessions.php) called at [/home1/redsauto/public_html/includes/autoload_func.php:48]
#3 require(/home1/redsauto/public_html/includes/autoload_func.php) called at [/home1/redsauto/public_html/includes/application_top.php:170]
#4 require(/home1/redsauto/public_html/includes/application_top.php) called at [/home1/redsauto/public_html/index.php:32]
--> PHP Warning: session_set_cookie_params(): Cannot change session cookie parameters when headers already sent in /home1/redsauto/public_html/includes/init_includes/init_sessions.php on line 44.

[17-Dec-2019 18:30:47 UTC] Request URI: /?worx=oxq, IP address: 69.163.224.109
#1 session_start() called at [/home1/redsauto/public_html/includes/functions/sessions.php:117]
#2 zen_session_start() called at [/home1/redsauto/public_html/includes/init_includes/init_sessions.php:89]
#3 require(/home1/redsauto/public_html/includes/init_includes/init_sessions.php) called at [/home1/redsauto/public_html/includes/autoload_func.php:48]
#4 require(/home1/redsauto/public_html/includes/autoload_func.php) called at [/home1/redsauto/public_html/includes/application_top.php:170]
#5 require(/home1/redsauto/public_html/includes/application_top.php) called at [/home1/redsauto/public_html/index.php:32]
--> PHP Warning: session_start(): Cannot start session when headers already sent in /home1/redsauto/public_html/includes/functions/sessions.php on line 117.

[17-Dec-2019 18:30:47 UTC] Request URI: /?worx=oxq, IP address: 69.163.224.109
#1 header() called at [/home1/redsauto/public_html/includes/init_includes/init_templates.php:70]
#2 require(/home1/redsauto/public_html/includes/init_includes/init_templates.php) called at [/home1/redsauto/public_html/includes/autoload_func.php:48]
#3 require(/home1/redsauto/public_html/includes/autoload_func.php) called at [/home1/redsauto/public_html/includes/application_top.php:170]
#4 require(/home1/redsauto/public_html/includes/application_top.php) called at [/home1/redsauto/public_html/index.php:32]
--> PHP Warning: Cannot modify header information - headers already sent by (output started at /home1/redsauto/public_html/**************/includes/init_includes/.1f7be16b.ico(2) : runtime-created function(4) : eval()'d code:300) in /home1/redsauto/public_html/includes/init_includes/init_templates.php on line 70.

[17-Dec-2019 18:30:47 UTC] Request URI: /?worx=oxq, IP address: 69.163.224.109
#1 header() called at [/home1/redsauto/public_html/includes/templates/responsive_classic/common/html_header.php:17]
#2 require(/home1/redsauto/public_html/includes/templates/responsive_classic/common/html_header.php) called at [/home1/redsauto/public_html/index.php:49]
--> PHP Warning: Cannot modify header information - headers already sent by (output started at /home1/redsauto/public_html/WhynotMake_thisreallyHardtohack12675/includes/init_includes/.1f7be16b.ico(2) : runtime-created function(4) : eval()'d code:300) in /home1/redsauto/public_html/includes/templates/responsive_classic/common/html_header.php on line 17.
I've tried researching this issue, but have come up with no clues.
Any ideas on how to fix this one? I understand it's just a warning, but I would like to eventually see the log folder empty.