Using php-function "strstr" as a modifier is deprecated and will be removed in a future release

Using php-function “strstr” as a modifier is deprecated and will be removed in a future release. Use Smarty::registerPlugin to explicitly register a custom modifier. in /home/www/johnickskysolutions.com/suitecrm/vendor/smarty/smarty/libs/sysplugins/smarty_internal_compile_private_modifier.php on line 114
Need help on how to go about this.
Thank you

This can be a compatibility issue. The following may help

  1. Set error reporting in php.ini as follows
    error_reporting = E_ALL & ~E_DEPRECATED & ~E_STRICT & ~E_NOTICE & ~E_WARNING

Tell us your SuiteCRM version, your PHP version, and what you are doing to make that message appear, and where it appears