pfSense

After moving to PHP7, an HA pair logs an XMLRPC error and files a notice even though the synchronization appears to have succeeded.

Primary logs an XMLRPC error:

Jul 16 11:22:53     php-fpm     983     /rc.filter_synchronize: Beginning XMLRPC sync data to https://10.11.2.3:443/xmlrpc.php.
Jul 16 11:22:53     php-fpm     983     /rc.filter_synchronize: XMLRPC reload data success with https://10.11.2.3:443/xmlrpc.php (pfsense.host_firmware_version).
Jul 16 11:22:53     php-fpm     983     /rc.filter_synchronize: XMLRPC versioncheck: 18.4 -- 18.4
Jul 16 11:22:53     php-fpm     983     /rc.filter_synchronize: Beginning XMLRPC sync data to https://10.11.2.3:443/xmlrpc.php.
Jul 16 11:22:54     php-fpm     983     /rc.filter_synchronize: Exception calling XMLRPC method restore_config_section # String could not be parsed as XML
Jul 16 11:22:54     php-fpm     983     /rc.filter_synchronize: New alert found: Exception calling XMLRPC method restore_config_section # String could not be parsed as XML
Jul 16 11:22:54     php-fpm     983     /rc.filter_synchronize: Beginning XMLRPC sync data to https://10.11.2.3:443/xmlrpc.php.
Jul 16 11:22:55     php-fpm     983     /rc.filter_synchronize: Exception calling XMLRPC method restore_config_section # String could not be parsed as XML
Jul 16 11:22:55     php-fpm     983     /rc.filter_synchronize: New alert found: Exception calling XMLRPC method restore_config_section # String could not be parsed as XML 

Secondary logs no errors:

Jul 16 11:22:54     check_reload_status         Syncing firewall
Jul 16 11:22:54     check_reload_status         Reloading filter
Jul 16 11:22:54     check_reload_status         Syncing firewall
Jul 16 11:22:55     check_reload_status         Reloading filter

And in the config history, it appears the XMLRPC sync completed successfully:

7/16/18 11:22:54     18.4     108 KiB     (system)@10.11.2.2: Merged in config (dnshaper, staticroutes, gateways, virtualip, system, aliases, ca, cert, crl, dhcpd, filter, ipsec, load_balancer, nat, openvpn, schedules, unbound, wol sections) from XMLRPC client.
7/16/18 11:22:54     18.4     108 KiB     (system)@10.11.2.2: Merged in config (dnshaper, staticroutes, gateways, virtualip, system, aliases, ca, cert, crl, dhcpd, filter, ipsec, load_balancer, nat, openvpn, schedules, unbound, wol sections) from XMLRPC client.