Error while activating

I have the following errors when activating the plugin! what should I do !?

Notice: is_feed was called incorrectly. Conditional query tags do not work before the query is run. Before then, they always return false. Please see Debugging in WordPress for more information. (This message was added in version 3.1.0.) in /home/domain/public_html/rank-math/wp-includes/functions.php on line 5229

Notice: is_feed was called incorrectly. Conditional query tags do not work before the query is run. Before then, they always return false. Please see Debugging in WordPress for more information. (This message was added in version 3.1.0.) in /home/domain/public_html/rank-math/wp-includes/functions.php on line 5229

Fatal error: Uncaught Exception: DateTime::__construct(): Failed to parse time string (????-??-?? ??:??:??) at position 0 (?): Unexpected character in /home/domain/public_html/rank-math/wp-content/plugins/seo-by-rank-math/includes/class-helper.php:80 Stack trace: #0 /home/domain/public_html/rank-math/wp-content/plugins/seo-by-rank-math/includes/class-helper.php(80): DateTime->__construct(‘\xDB\xB1\xDB\xB3\xDB\xB9\xDB\xB9-\xDB\xB0\xDB\xB8-\xDB…’) #1 /home/domain/public_html/rank-math/wp-content/plugins/seo-by-rank-math/includes/modules/analytics/class-stats.php(94): RankMath\Helper::get_midnight(‘\xDB\xB1\xDB\xB3\xDB\xB9\xDB\xB9-\xDB\xB0\xDB\xB8-\xDB…’) #2 /home/domain/public_html/rank-math/wp-content/plugins/seo-by-rank-math/includes/modules/analytics/class-stats.php(76): RankMath\Analytics\Stats->set_date_range() #3 /home/domain/public_html/rank-math/wp-content/plugins/seo-by-rank-math/includes/modules/analytics/class-analytics.php(59): RankMath\Analytics\Stats::get() #4 /home/domain/publi in /home/domain/public_html/rank-math/wp-content/plugins/seo-by-rank-math/includes/class-helper.php on line 80