Error message

• Notice: Only variables should be passed by reference in eval() (line 7 of /home/exhibit/public_html/sites/all/modules/contrib/ds/modules/ds_format/ds_format.module(66) : eval()'d code).
• Notice: Only variables should be passed by reference in eval() (line 6 of /home/exhibit/public_html/sites/all/modules/contrib/ds/modules/ds_format/ds_format.module(66) : eval()'d code).
• Notice: Only variables should be passed by reference in eval() (line 7 of /home/exhibit/public_html/sites/all/modules/contrib/ds/modules/ds_format/ds_format.module(66) : eval()'d code).
• Notice: Only variables should be passed by reference in eval() (line 6 of /home/exhibit/public_html/sites/all/modules/contrib/ds/modules/ds_format/ds_format.module(66) : eval()'d code).
• Deprecated function: Function create_function() is deprecated in eval() (line 1 of /home/exhibit/public_html/modules/php/php.module(80) : eval()'d code).
• Notice: Undefined index: closure in contextual_preprocess_page() (line 166 of /home/exhibit/public_html/sites/all/modules/contrib/contextual/contextual.module).
• Notice: Only variables should be passed by reference in exhibitions_get_footer_content() (line 83 of /home/exhibit/public_html/sites/exhibitions/themes/exhibitions/template.php).