Compilation failed: nothing to repeat at offset 0 in BrowserCache_Plugin.php on line 247

[mahakala]

[03-Dec-2017 15:35:53 UTC] PHP Warning: preg_match(): Compilation failed: nothing to repeat at offset 0 in /htdocs/wp-content/plugins/w3-total-cache/BrowserCache_Plugin.php on line 247

[nigrosimone]

this error is caused by preg_match on https://github.com/szepeviktor/w3-total-cache-fixed/blob/v0.9.5.x/BrowserCache_Plugin.php#L247, you should investigate on the content of $exceptions.

$exceptions can be setted by browsercache.replace.exceptions or the result of get_replace_querystring_extensions():

w3-total-cache-fixed/BrowserCache_Core.php

Line 43 in 96a0963

public function get_replace_querystring_extensions( $config ) {

In both cases, is a user config. See your: admin panel > browser cache settings ... something is wrong.