Hey there having a problem with Magento 2

This is the problem line 102
foreach ($this->getStoreColorSchemes($store) as $id => $data) {

I get this error in stores-config-theme options-when i try and select the another site than default, screen dumps this instead…please help

1 exception(s):
Exception #0 (Exception): Warning: Invalid argument supplied for foreach() in /var/www/xxx/public_html/app/code/Zemez/ThemeOptions/Helper/ColorScheme.php on line 102

Exception #0 (Exception): Warning: Invalid argument supplied for foreach() in /var/www/xxx/public_html/app/code/Zemez/ThemeOptions/Helper/ColorScheme.php on line 102
#1 ZemezThemeOptionsHelperColorScheme->getDefaultStoreValues(1) called at [app/code/Zemez/ThemeOptions/Helper/ColorScheme.php:141]

2 ZemezThemeOptionsHelperColorScheme->getJsonDefaultValues(1) called at [app/code/Zemez/ThemeOptions/Block/Adminhtml/System/Config/Field/ColorScheme.php:145]

3 ZemezThemeOptionsBlockAdminhtmlSystemConfigFieldColorScheme->_getExtraJs(&MagentoFrameworkDataFormElementSelect#0000000034d3be100000000074ef8d61#) called at [app/code/Zemez/ThemeOptions/Block/Adminhtml/System/Config/Field/ColorScheme.php:55]

4 ZemezThemeOptionsBlockAdminhtmlSystemConfigFieldColorScheme->render(&MagentoFrameworkDataFormElementSelect#0000000034d3be100000000074ef8d61#) called at [vendor/magento/framework/Data/Form/Element/AbstractElement.php:469]

5 MagentoFrameworkDataFormElementAbstractElement->getHtml() called at [vendor/magento/framework/Data/Form/Element/AbstractElement.php:483]