As far as I can share will be below.
Not sure if this is the part or not, but for today it seems like it is.
[Wed Nov 20 08:58:55.319455 2019] [fcgid:warn] [pid x:tid y] [client ip:port] mod_fcgid: stderr: PHP Fatal error: Uncaught Error: Class 'AAM_Core_Server' not found in /home/example/example.com/public_html/wp-content/plugins/advanced-access-manager/application/Shared/Manager.php:71, referer: https://example.com/wp-admin/plugins.php
[Wed Nov 20 08:58:55.319524 2019] [fcgid:warn] [pid x:tid y] [client ip:port] mod_fcgid: stderr: Stack trace:, referer: https://example.com/wp-admin/plugins.php
[Wed Nov 20 08:58:55.319529 2019] [fcgid:warn] [pid x:tid y] [client ip:port] mod_fcgid: stderr: #0 /home/example/example.com/public_html/wp-includes/class-wp-hook.php(286): AAM_Shared_Manager->checkForUpdates(Array, Array, 'https://api.wor...'), referer: https://example.com/wp-admin/plugins.php
[Wed Nov 20 08:58:55.319534 2019] [fcgid:warn] [pid x:tid y] [client ip:port] mod_fcgid: stderr: #1 /home/example/example.com/public_html/wp-includes/plugin.php(208): WP_Hook->apply_filters(Array, Array), referer: https://example.com/wp-admin/plugins.php
[Wed Nov 20 08:58:55.319539 2019] [fcgid:warn] [pid x:tid y] [client ip:port] mod_fcgid: stderr: #2 /home/example/example.com/public_html/wp-includes/class-http.php(436): apply_filters('http_response', Array, Array, 'https://api.wor...'), referer: https://example.com/wp-admin/plugins.php
[Wed Nov 20 08:58:55.319543 2019] [fcgid:warn] [pid x:tid y] [client ip:port] mod_fcgid: stderr: #3 /home/example/example.com/public_html/wp-includes/class-http.php(596): WP_Http->request('https://api.wor...', Array), referer: https://example.com/wp-admin/plugins.php
[Wed Nov 20 08:58:55.319548 2019] [fcgid:warn] [pid x:tid y] [client ip:port] mod_fcgid: stderr: #4 /home/example/example.com/public_html/wp-includes/http.php(187): WP_Http->post('https://api.wor...', Array), referer: https://example.com/wp-admin/plugins.php
[Wed Nov 20 08:58:55.319553 2019] [fcgid:warn] [pid x:tid y] [client ip:port] mod_fcgid: stderr: #5 /home/example/example.com/public_html/wp-includes/update.php(376): wp_remote_post('https://api.wor...', Array), referer: https://example.com/wp-admin/plugins.php
[Wed Nov 20 08:58:55.319557 2019] [fcgid:warn] [pid x:tid y] [client ip:port] mod_fcgid: stderr: #6 /home/example/example.com/public_html/wp-includes/class-wp-hook.php(284): wp_update_plugins(), referer: https://example.com/wp-admin/plugins.php
[Wed Nov 20 08:58:55.319564 2019] [fcgid:warn] [pid x:tid y] [client ip:port] mod_fcgid: stderr: #7 / in /home/example/example.com/public_html/wp-content/plugins/advanced-access-manager/application/Shared/Manager.php on line 71, referer: https://example.com/wp-admin/plugins.php
FYI, I was using WP5.2.3, lotta plugins not support 5.3 yet, so I decided to keep that, and also need some test.