Background of the issue:
Hi, i tried to login to the website and the back end was WSOD. I contacted siteground support who have for now disabled the plugin
Here is the update from them can you advise please?
I've investigated the case and the problem with the wp-admin was produced by the sitepress-multilingual-cms plugin. When you tried to open the wp-admin panel of the website with that plugin active, the process that handles your request starts looping on looking for a non-existing file:
until it reaches the server timeout limits and gets killed. Note in the above path that there is no actual filename, just a ".js" extension.
My recommendation would be to try and reinstall the plugin and if the problem persists - consult with its developers who should be able to determine the cause of the problem and suggest a solution.
Symptoms:
site back end is only accessible if WPML is disabled