Prestashop version: 1.6.1.17
The response from developer module is "Provider should be able to quickly find and fix the error".
As far as I know, there is not an easy & quick way to fix that.
We did not make any changes to native way linking of Prestashop. Language is activated - I do not know what you mean here but I am able to see translations etc.
Is it possible that SEO friendly links causes such issue?