we have a CiviCRM installation under WordPress 4.9.10 and 2 MySQL db: one for Wordpress and one for CiviCRM. Actually we imported and start to manage more than 5000 contacts.
Everything operate as well, excepting the following actions, returning us a
Network Error Unable to reach the server. Please refresh this page in your browser and try again.
- clicking to go on page 2 on a "Search -> Find Contacts" or a "Search -> Advanced Search"
- adding a meeting or phone call in the contact summary.
There are NO ERRORS adding contributions, registering for events, adding pledges, sending emails.
We see no errors in apache logs too. Actual PHP variables are:
php_value memory_limit 256M php_value max_input_vars 2500 php_value upload_max_filesize 16M php_value register_globals off php_value max_execution_time 600 php_value output_buffering 0
Any ideas about to solve it? TIA -- Francesco