Problem with theme patistry and WordPress

Hi,

I have this error, and i can’t modify theme or configuration by backoffice ?

WordPress version 5.5.3
Thème actuel : Patistry (version 1.0.7)
Extension actuelle : (version )
PHP version 7.3.25

Détails de l’erreur
======================
Une erreur de type E_ERROR a été causée dans la ligne 128 du fichier
/home/grillet/public_html/wp-content/themes/patistry/inc/admin/sassphp/src/Parser.php.
Message d’erreur : Uncaught Leafo\ScssPhp\Exception\ParserException:
parse error: failed at $bg_header_color: ; (stdin) on line 1 in
/home/grillet/public_html/wp-content/themes/patistry/inc/admin/sassphp/src/Parser.php:128
Stack trace:
#0
/home/grillet/public_html/wp-content/themes/patistry/inc/admin/sassphp/src/Parser.php(169):
Leafo\ScssPhp\Parser->throwParseError()
#1
/home/grillet/public_html/wp-content/themes/patistry/inc/admin/sassphp/src/Compiler.php(197):
Leafo\ScssPhp\Parser->parse(‘$bg_header_colo…’)
#2
/home/grillet/public_html/wp-content/themes/patistry/inc/admin/sassphp/sass2css.php(116):
Leafo\ScssPhp\Compiler->compile(‘$bg_header_colo…’)
#3 /home/grillet/public_html/wp-includes/class-wp-hook.php(289):
sass2css->sass_to_css(Array)
#4 /home/grillet/public_html/wp-includes/class-wp-hook.php(311):
WP_Hook->apply_filters(”, Array)
#5 /home/grillet/public_html/wp-includes/plugin.php(478):
WP_Hook->do_action(Array)
#6
/home/grillet/public_html/wp-content/plugins/redux-framework/redux-core/inc/classes/class-redux-

Thank’s for your help
Frédéric