Thank you so much @marcus for your single quote suggestion (‘) that was missing. You save my work. and also to @was955 for sharing the way to fix code pluggin qtranslate. I am not so good in this area, but trying to fix the language support on my site.
was955: I followed your instruction, but after I edited the site code it shown server error. Do you have any suggestions of how to fix it back to previous mode? the screen shot detail is in the attached file.