Gegning error when ading socument's alias

Hello,
could you help me solving this problem?
When I’m adding Document’s alias to existing document I get this message: Warning: strtr() [function.strtr]: The second argument is not an array. in /manager/processors/save_content.processor.php on line 859

I’m running modx 9.6 ver.

lx

If you’re setting ’Automatically generate alias’ to ’yes’ in Tools > Configuration > Friendly URLs and create and save a new document, do you get the same error?

Yes, I get the same respond when seting friendly url’s ON
lx

I was assuming that friendly URL is already turned on. My question was about if you get that error also when Automatically create alias is on, and you create and save a new document.

Is it possible to save the document then without an error, and does it have an alias?

If the problem still persists, can you please read Before posting requests for help and provide more information?