E_WARNING: Illegal string offset 'link_rewrite'

[piribipipi]

Hi how are you??

Im receiving this warning:

E_WARNING: Illegal string offset 'link_rewrite'

in content_5fa4942f7e6270_37138964 called at /home/www/......./www/tools/smarty/sysplugins/smarty_internal_templatebase.php (188)

in Smarty_Internal_TemplateBase::fetch called at /home/www/......../www/classes/SmartyCustom.php (110)

in SmartyCustomCore::fetch called at /home/www/........./www/override/classes/controller/FrontController.php (276)

in FrontController::display called at /home/www/......../www/classes/controller/Controller.php (209)

in ControllerCore::run called at /home/www/........../www/override/classes/Dispatcher.php (133)

in Dispatcher::dispatch called at /home/www/......./www/index.php (28)

 

Someone know how can i fix this warning?? or why is happening?

Its Prestashop 1.6

thank you so much!