Update to 2.0.4 error

PHP Parse error: syntax error, unexpected 'class' (T_CLASS), expecting identifier (T_STRING) or variable (T_VARIABLE) or '{' or '$' in /var/www/vhosts/tuyasystems.com/httpdocs/artisan on line 31

You should upgrade your PHP version to 7.2 or higher.

I received the 2.04 update notification, I tried to update but it froze at 80%. I did reset and my version became 2.04, but update notification still on the update page.