Help please, got this message and I think the reason behind this is I uploaded an unsupported image format.
LOG:
2016-07-05T13:44:31+00:00 ERR (3):
exception 'Exception' with message 'Unsupported image format.' in /chroot/home/atkns/shop.atknsn.com/html/lib/Varien/Image/Adapter/Gd2.php:233
Stack trace:
#0 /chroot/home/atkns/shop.atknsn.com/html/lib/Varien/Image/Adapter/Gd2.php(74): Varien_Image_Adapter_Gd2->_getCallback('create')
#1 /chroot/home/atkns/shop.atknsn.com/html/lib/Varien/Image.php(70): Varien_Image_Adapter_Gd2->open('/chroot/home/at...')
#2 /chroot/home/atkns/shop.atknsn.com/html/lib/Varien/Image.php(52): Varien_Image->open()
#3 /chroot/home/atkns/shop.atknsn.com/html/vendor/aheadworks/shop-by-brand/app/code/local/AW/Shopbybrand/Helper/Data.php(47): Varien_Image->__construct('/chroot/home/at...')
#4 /chroot/home/atkns/shop.atknsn.com/html/vendor/aheadworks/shop-by-brand/app/code/local/AW/Shopbybrand/Block/Allbrands.php(61): AW_Shopbybrand_Helper_Data->resizeImg('aw_shopbybrand/...', 192, 80)
#5 /chroot/home/atkns/shop.atknsn.com/html/vendor/shopgo/clarity-theme/app/design/frontend/shopgo/clarity/template/aw_shopbybrand/featured_brands.phtml(49): AW_Shopbybrand_Block_Allbrands->getImageUrl(Object(AW_Shopbybrand_Model_Brand), 192, 80)
#6 /chroot/home/atkns/shop.atknsn.com/html/app/code/core/Mage/Core/Block/Template.php(241): include('/chroot/home/at...')
#7 /chroot/home/atkns/shop.atknsn.com/html/app/code/core/Mage/Core/Block/Template.php(272): Mage_Core_Block_Template->fetchView('frontend/shopgo...')
#8 /chroot/home/atkns/shop.atknsn.com/html/app/code/core/Mage/Core/Block/Template.php(286): Mage_Core_Block_Template->renderView()
#9 /chroot/home/atkns/shop.atknsn.com/html/app/code/core/Mage/Core/Block/Abstract.php(919): Mage_Core_Block_Template->_toHtml()
#10 /chroot/home/atkns/shop.atknsn.com/html/app/code/core/Mage/Core/Model/Email/Template/Filter.php(206): Mage_Core_Block_Abstract->toHtml()
#11 [internal function]: Mage_Core_Model_Email_Template_Filter->blockDirective(Array)
#12 /chroot/home/atkns/shop.atknsn.com/html/lib/Varien/Filter/Template.php(163): call_user_func(Array, Array)
#13 /chroot/home/atkns/shop.atknsn.com/html/app/code/core/Mage/Core/Model/Email/Template/Filter.php(558): Varien_Filter_Template->filter('<p>{{block type...')
#14 /chroot/home/atkns/shop.atknsn.com/html/app/code/core/Mage/Cms/Block/Page.php(101): Mage_Core_Model_Email_Template_Filter->filter('<p>{{block type...')
#15 /chroot/home/atkns/shop.atknsn.com/html/app/code/core/Mage/Core/Block/Abstract.php(919): Mage_Cms_Block_Page->_toHtml()
#16 /chroot/home/atkns/shop.atknsn.com/html/app/code/core/Mage/Core/Block/Abstract.php(637): Mage_Core_Block_Abstract->toHtml()
#17 /chroot/home/atkns/shop.atknsn.com/html/app/code/core/Mage/Core/Block/Abstract.php(577): Mage_Core_Block_Abstract->_getChildHtml('cms_page', true)
#18 /chroot/home/atkns/shop.atknsn.com/html/app/code/core/Mage/Page/Block/Html/Wrapper.php(52): Mage_Core_Block_Abstract->getChildHtml('', true, true)
#19 /chroot/home/atkns/shop.atknsn.com/html/app/code/core/Mage/Core/Block/Abstract.php(919): Mage_Page_Block_Html_Wrapper->_toHtml()
#20 /chroot/home/atkns/shop.atknsn.com/html/app/code/core/Mage/Core/Block/Text/List.php(43): Mage_Core_Block_Abstract->toHtml()
#21 /chroot/home/atkns/shop.atknsn.com/html/app/code/core/Mage/Core/Block/Abstract.php(919): Mage_Core_Block_Text_List->_toHtml()
#22 /chroot/home/atkns/shop.atknsn.com/html/app/code/core/Mage/Core/Block/Abstract.php(637): Mage_Core_Block_Abstract->toHtml()
#23 /chroot/home/atkns/shop.atknsn.com/html/app/code/core/Mage/Core/Block/Abstract.php(581): Mage_Core_Block_Abstract->_getChildHtml('content', true)
#24 /chroot/home/atkns/shop.atknsn.com/html/vendor/shopgo/clarity-theme/app/design/frontend/shopgo/clarity/template/page/1column.phtml(24): Mage_Core_Block_Abstract->getChildHtml('content')
#25 /chroot/home/atkns/shop.atknsn.com/html/app/code/core/Mage/Core/Block/Template.php(241): include('/chroot/home/at...')
#26 /chroot/home/atkns/shop.atknsn.com/html/app/code/core/Mage/Core/Block/Template.php(272): Mage_Core_Block_Template->fetchView('frontend/shopgo...')
#27 /chroot/home/atkns/shop.atknsn.com/html/app/code/core/Mage/Core/Block/Template.php(286): Mage_Core_Block_Template->renderView()
#28 /chroot/home/atkns/shop.atknsn.com/html/app/code/core/Mage/Core/Block/Abstract.php(919): Mage_Core_Block_Template->_toHtml()
#29 /chroot/home/atkns/shop.atknsn.com/html/app/code/core/Mage/Core/Model/Layout.php(555): Mage_Core_Block_Abstract->toHtml()
#30 /chroot/home/atkns/shop.atknsn.com/html/app/code/core/Mage/Core/Controller/Varien/Action.php(390): Mage_Core_Model_Layout->getOutput()
#31 /chroot/home/atkns/shop.atknsn.com/html/app/code/core/Mage/Cms/Helper/Page.php(137): Mage_Core_Controller_Varien_Action->renderLayout()
#32 /chroot/home/atkns/shop.atknsn.com/html/app/code/core/Mage/Cms/Helper/Page.php(52): Mage_Cms_Helper_Page->_renderPage(Object(Mage_Cms_IndexController), 'home')
#33 /chroot/home/atkns/shop.atknsn.com/html/app/code/core/Mage/Cms/controllers/IndexController.php(45): Mage_Cms_Helper_Page->renderPage(Object(Mage_Cms_IndexController), 'home')
#34 /chroot/home/atkns/shop.atknsn.com/html/app/code/core/Mage/Core/Controller/Varien/Action.php(418): Mage_Cms_IndexController->indexAction()
#35 /chroot/home/atkns/shop.atknsn.com/html/app/code/core/Mage/Core/Controller/Varien/Router/Standard.php(254): Mage_Core_Controller_Varien_Action->dispatch('index')
#36 /chroot/home/atkns/shop.atknsn.com/html/vendor/balke-technologies/magento-module-storemaintenance/app/code/community/BalkeTechnologies/StoreMaintenance/Controller/Router/Standard.php(90): Mage_Core_Controller_Varien_Router_Standard->match(Object(Mage_Core_Controller_Request_Http))
#37 /chroot/home/atkns/shop.atknsn.com/html/app/code/core/Mage/Core/Controller/Varien/Front.php(172): BalkeTechnologies_StoreMaintenance_Controller_Router_Standard->match(Object(Mage_Core_Controller_Request_Http))
#38 /chroot/home/atkns/shop.atknsn.com/html/app/code/core/Mage/Core/Model/App.php(365): Mage_Core_Controller_Varien_Front->dispatch()
#39 /chroot/home/atkns/shop.atknsn.com/html/app/Mage.php(692): Mage_Core_Model_App->run(Array)
#40 /chroot/home/atkns/shop.atknsn.com/html/index.php(83): Mage::run('', 'store')
#41 {main}