Fatal error: Uncaught TypeError: round(): Argument #1 ($num) must be of type int|float, string given in /usr/www/users/hippojpgxv/wp-content/themes/boo/rella/rella-helpers.php:668
Stack trace:
#0 /usr/www/users/hippojpgxv/wp-content/themes/boo/rella/rella-helpers.php(668): round('-1.75px')
#1 /usr/www/users/hippojpgxv/wp-content/themes/boo/theme/theme-dynamic-css.php(515): Rella_Helper->get_typography_option(Array, Array, 'letter-spacing')
#2 /usr/www/users/hippojpgxv/wp-content/themes/boo/rella/rella-dynamic-css.php(409): rella_dynamic_css_array()
#3 /usr/www/users/hippojpgxv/wp-content/themes/boo/rella/rella-dynamic-css.php(393): Rella_Dynamic_CSS->dynamic_css()
#4 /usr/www/users/hippojpgxv/wp-content/themes/boo/rella/rella-dynamic-css.php(91): Rella_Dynamic_CSS->dynamic_css_cached()
#5 /usr/www/users/hippojpgxv/wp-content/themes/boo/rella/rella-dynamic-css.php(61): Rella_Dynamic_CSS->make_css()
#6 /usr/www/users/hippojpgxv/wp-includes/class-wp-hook.php(307): Rella_Dynamic_CSS->set_mode(Object(WP))
#7 /usr/www/users/hippojpgxv/wp-includes/class-wp-hook.php(331): WP_Hook->apply_filters(NULL, Array)
#8 /usr/www/users/hippojpgxv/wp-includes/plugin.php(524): WP_Hook->do_action(Array)
#9 /usr/www/users/hippojpgxv/wp-includes/class-wp.php(787): do_action_ref_array('wp', Array)
#10 /usr/www/users/hippojpgxv/wp-includes/functions.php(1330): WP->main('')
#11 /usr/www/users/hippojpgxv/wp-blog-header.php(16): wp()
#12 /usr/www/users/hippojpgxv/index.php(17): require('/usr/www/users/...')
#13 {main}
  thrown in /usr/www/users/hippojpgxv/wp-content/themes/boo/rella/rella-helpers.php on line 668