ERROR: BrowserCache.php on line 191

My error log is being filled with 1,000s of the following…

[Tue Jun 23 23:06:39.840863 2015] [:error] [pid 1589] [client 101.169.170.145:38608] PHP Warning:  preg_match(): Compilation failed: nothing to repeat at offset 0 in /var/www/zerotackle.com/public_html/wp-content/plugins/w3-total-cache/lib/W3/Plugin/BrowserCache.php on line 191
[Tue Jun 23 23:06:39.840895 2015] [:error] [pid 1589] [client 101.169.170.145:38608] PHP Warning:  preg_match(): Compilation failed: nothing to repeat at offset 0 in /var/www/zerotackle.com/public_html/wp-content/plugins/w3-total-cache/lib/W3/Plugin/BrowserCache.php on line 191
[Tue Jun 23 23:06:39.840907 2015] [:error] [pid 1589] [client 101.169.170.145:38608] PHP Warning:  preg_match(): Compilation failed: nothing to repeat at offset 0 in /var/www/zerotackle.com/public_html/wp-content/plugins/w3-total-cache/lib/W3/Plugin/BrowserCache.php on line 191
[Tue Jun 23 23:06:39.840992 2015] [:error] [pid 1589] [client 101.169.170.145:38608] PHP Warning:  preg_match(): Compilation failed: nothing to repeat at offset 0 in /var/www/zerotackle.com/public_html/wp-content/plugins/w3-total-cache/lib/W3/Plugin/BrowserCache.php on line 191

Any idea what’s causing it and how I resolve it?

https://wordpress.org/plugins/w3-total-cache/