I previously used this plugin on a different site and it worked well, but now installation breaks off with the following message:
Plugin could not be activated because it triggered a fatal error.
Fatal error: Call-time pass-by-reference has been removed; If you would like to pass argument by reference, modify the declaration of sig_indexFileCheck(). in path to my directory/wp-content/plugins/silence-is-golden-guard/sig-guard_lib.php on line 485
Does anyone have an idea what I might tweak to get it running please?