503 Backend fetch error

Trusitio Support

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Some of the sites we manage on CLOUDWAYS at times receive the “503 Back end Fetch error” specifically those we on board that are not using X Theme as the core theme. On further investigation I noticed that the PHP short_open_tags were set to Off that is why the site pages which are using short PHP tags () were unable to be served by the web server. We set the PHP short_open_tags to On and this resolved this issue and the pages will be compatible with the current version as served by the Web server.