[Defender] defender file scan

The defender scan gets stuck at a certain percentage (not always the same) and never completes. Httpd error log shows the following line, repeated over and over, once per minute.

[Wed Jun 06 12:13:22.377811 2018] [:error] [pid 16527] [client 128.59.160.97:53198] PHP Fatal error: Allowed memory size of 134217728 bytes exhausted (tried to allocate 72 bytes) in /var/www/html/tapuganda.org/wp-content/plugins/wp-defender/vendor/php_codesniffer/CodeSniffer/File.php on line 1647, referer: https://tapuganda.org/wp-admin/admin.php?page=wdf-scan

Memory limit in php.ini is 128M

(PS - the link in the "good support ticket" tutorial that I certify I have read in the ticket submission checkbox is a whole lot longer reading than 1 minute! Did this link change recently? )