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The index_rssdocuments format does not exist

Error (Internal Error) in file '/var/www/html/lodel/lodel/scripts/parser.php' on line 107 : 
Unable to read file ./tpl//index_rssdocuments.html

Error (Internal Error) in file '/var/www/html/lodel/lodel/scripts/parser.php' on line 57 : 
LODELSCRIPT ERROR in file ./tpl//index_rssdocuments.html : Unable to read file ./tpl//index_rssdocuments.html