Fatal error: Allowed memory size of 805306368 bytes exhausted (tried to allocate 20480 bytes) in /home/customer/www/pearlsofportugal.com/public_html/wp-content/plugins/sitepress-multilingual-cms/classes/utilities/class-debug-backtrace.php on line 137
The "allowed memory exhausted" error is usually related to server/hosting settings so they (the hosting support) might be the only ones who can fix it.
However, there are a good amount of existing tickets related to this exact error with recommendations and solutions from our team.
I created this custom search URL below - can you please take a look at the tickets showing up and see if the solution that worked for the customers works for you, too?
PS 2: Make sure that you update your WPML plugins to the latest version. Go to Plugins > Add new > Commercial > click on "check for updates" and update plugins to the latest version. Depending on the reason why this is happening on the site, just by updating the plugins, you might get rid of this issue.
