Unsupported operand types: string - int
#0 /www/htdocs/w00ecc9d/site/lib/Pager.class.php(52): Pager->call()
#1 /www/htdocs/w00ecc9d/site/mod/index/helper/mod_publication.helper.php(514): Pager->check()
#2 /www/htdocs/w00ecc9d/site/mod/index/index.php(418): mod_publication_helper->author('mahabadarda', 7)
#3 /www/htdocs/w00ecc9d/site/lib/Run.class.php(24): index_mod->author('mahabadarda', '7')
#4 /www/htdocs/w00ecc9d/site/lib/Amed.class.php(629): Run::execute(Object(index_mod), 'author', Array)
#5 [internal function]: Amed->__destruct()
#6 {main}