There seems to be a problem with the roles of the current user. So could you please post the permissions the user/role has?
Has your user permission to create something under the node that you are viewing? Does the same happen if you remove the section limitation?
Unfortunately I don't know what is going on - I have tried a similar role and did not get any errors. Somehow EZ can't fetch the policies array properly. I don't think is has to do with the languages - the error message just mentions the languages because at a certain point during the retrieval of the information on cancreateclasslist EZ tries to fetch the policies into an array with the keys 'classes' and 'language_codes'. As the whole thing fails the language codes are mentioned as well.
Maybe the user or the user group you assigned the role to has become invalid somehow - I really do not know - sorry.
Claudia
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