Hello,
I installed the debugger plugin, enabled the logging and this is what I found:
[04-May-2017 03:04:53 UTC] PHP Fatal error: Allowed memory size of 134217728 bytes exhausted (tried to allocate 130968 bytes) in /home/.../public_html/wp-includes/plugin.php on line 2100
So, you need to increase your PHP memory, preferably to something like 256MB.
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