Fatal error: Uncaught TypeError

Hello,

i got the same error as some user before.
I cant find a solution in the topics so i have to create a new entry here.
i got this error after saving some theme settings and the message just disappears after resetting all theme settings.

Fatal error: Uncaught TypeError: Leafo\ScssPhp\Node\Number::offsetGet(): Return value must be of type bool, array returned in XXXXXXX/wp-content/themes/uray/inc/admin/sassphp/src/Node/Number.php:184 Stack trace: #0 XXXXXXX/wp-content/themes/uray/inc/admin/sassphp/src/Compiler.php(2010): Leafo\ScssPhp\Node\Number->offsetGet(2) #1 XXXXXXX/wp-content/themes/uray/inc/admin/sassphp/src/Compiler.php(3620): Leafo\ScssPhp\Compiler->reduce(Object(Leafo\ScssPhp\Node\Number), true) #2 XXXXXXX/wp-content/themes/uray/inc/admin/sassphp/src/Compiler.php(2203): Leafo\ScssPhp\Compiler->callNativeFunction('rgba', Array, NULL) #3 XXXXXXX/wp-content/themes/uray/inc/admin/sassphp/src/Compiler.php(2180): Leafo\ScssPhp\Compiler->fncall('rgba', Array) #4 XXXXXXX/wp-content/themes/uray/inc/admin/sassphp/src/Compiler.php(1615): Leafo\ScssPhp\Compiler->reduce(Array) #5 XXXXXXX/wp-content/themes/uray/inc/admin/sassphp/src/Compiler.php(1311): Leafo\ScssPhp\Compiler->compileChild(Array, Object(Leafo\ScssPhp\Formatter\OutputBlock)) #6 XXXXXXX/wp-content/themes/uray/inc/admin/sassphp/src/Compiler.php(318): Leafo\ScssPhp\Compiler->compileChildrenNoReturn(Array, Object(Leafo\ScssPhp\Formatter\OutputBlock)) #7 XXXXXXX/wp-content/themes/uray/inc/admin/sassphp/src/Compiler.php(205): Leafo\ScssPhp\Compiler->compileRoot(Object(Leafo\ScssPhp\Block)) #8 XXXXXXX/wp-content/themes/uray/inc/admin/sassphp/sass2css.php(119): Leafo\ScssPhp\Compiler->compile('$bg_header_colo...') #9 XXXXXXX/wp-includes/class-wp-hook.php(310): sass2css->sass_to_css(Array) #10 XXXXXXX/wp-includes/class-wp-hook.php(332): WP_Hook->apply_filters('', Array) #11 XXXXXXX/wp-includes/plugin.php(517): WP_Hook->do_action(Array) #12 XXXXXXX/wp-content/plugins/redux-framework/redux-core/inc/classes/class-redux-panel.php(218): do_action('redux/options/u...', Array, Array) #13 XXXXXXX/wp-content/plugins/redux-framework/redux-core/templates/panel/header-stickybar.tpl.php(37): Redux_Panel->notification_bar() #14 XXXXXXX/wp-content/plugins/redux-framework/redux-core/inc/classes/class-redux-panel.php(349): require('/homepages/22/d...') #15 XXXXXXX/wp-content/plugins/redux-framework/redux-core/templates/panel/content.tpl.php(24): Redux_Panel->get_template('header-stickyba...') #16 XXXXXXX/wp-content/plugins/redux-framework/redux-core/inc/classes/class-redux-panel.php(349): require('/homepages/22/d...') #17 XXXXXXX/wp-content/plugins/redux-framework/redux-core/templates/panel/container.tpl.php(48): Redux_Panel->get_template('content.tpl.php') #18 XXXXXXX/wp-content/plugins/redux-framework/redux-core/inc/classes/class-redux-panel.php(349): require('/homepages/22/d...') #19 XXXXXXX/wp-content/plugins/redux-framework/redux-core/inc/classes/class-redux-panel.php(115): Redux_Panel->get_template('container.tpl.p...') #20 XXXXXXX/wp-content/plugins/redux-framework/redux-core/inc/classes/class-redux-panel.php(62): Redux_Panel->panel_template() #21 XXXXXXX/wp-content/plugins/redux-framework/redux-core/inc/classes/class-redux-page-render.php(348): Redux_Panel->init() #22 XXXXXXX/wp-includes/class-wp-hook.php(308): Redux_Page_Render->generate_panel('') #23 XXXXXXX/wp-includes/class-wp-hook.php(332): WP_Hook->apply_filters('', Array) #24 XXXXXXX/wp-includes/plugin.php(517): WP_Hook->do_action(Array) #25 XXXXXXX/wp-admin/admin.php(259): do_action('toplevel_page_U...') #26 {main} thrown in XXXXXXX/wp-content/themes/uray/inc/admin/sassphp/src/Node/Number.php on line 184