Error: Call to undefined function __() on attempt from alias domain
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I’m getting this error in server’s log when someone attempt to my website with an alias domain:
[Tue Jan 12 09:05:49.496433 2021] [lsapi:error] [pid 30846:tid 47415100970752] [client 89.164.14.29:45474] [host igranje.org] Backend fatal error: PHP Fatal error: Uncaught Error: Call to undefined function __() in /public_html/wp-content/plugins/wp-optimize/cache/file-based-page-cache-functions.php:28\nStack trace:\n#0 [internal function]: wpo_cache('', 9)\n#1 {main}\n thrown in /public_html/wp-content/plugins/wp-optimize/cache/file-based-page-cache-functions.php on line 28\nOur main domain is https://igranje.hr and an alias is https://igranje.org.
We are on multi-site WP.
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