Hi,
same problem here with the same error code on a multisite installation.
It works on the main site and on the second subsite.
I could configure the default language on the third subsite but can’t add any new language.
Any hints are very much appreciated. Thank you!
Hi, could you solve the problem? Is there any additional advice? It still doesn’t work for our site. Also: the help page for facebook (see above link) says to disable the strict modus. But FB doesn’t allow this anymore. Thank you for any hint!