After solving couple of times the "500 Internal Server Error" problem as described in a previous post, I received another complaint from one of my clients I host: "I also cannot save the articles and here is the error I got 500 - An error has...

 
It seems that module parameters haven't been configured properly. Please make sure that you are using a valid twitter username, and that you have inserted the correct keys. Detailed instructions are written in the module settings page.
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