Class blfa_file does not exist
#0 /var/www/html/magento/vendor/magento/framework/Code/Reader/ClassReader.php(19): ReflectionClass->__construct('blfa_file')
#1 /var/www/html/magento/vendor/magento/framework/ObjectManager/Definition/Runtime.php(44): Magento\Framework\Code\Reader\ClassReader->getConstructor('blfa_file')
#2 /var/www/html/magento/vendor/magento/framework/ObjectManager/Factory/Dynamic/Developer.php(71): Magento\Framework\ObjectManager\Definition\Runtime->getParameters('blfa_file')
#3 /var/www/html/magento/vendor/magento/framework/ObjectManager/ObjectManager.php(57): Magento\Framework\ObjectManager\Factory\Dynamic\Developer->create('blfa_file', Array)
#4 /var/www/html/magento/vendor/magento/framework/Data/Form/Element/Factory.php(81): Magento\Framework\ObjectManager\ObjectManager->create('blfa_file', Array)
#5 /var/www/html/magento/vendor/magento/framework/Data/Form/AbstractForm.php(155): Magento\Framework\Data\Form\Element\Factory->create('blfa_file', Array)
#6 /var/www/html/magento/vendor/magento/framework/Data/Form/Element/Fieldset.php(211): Magento\Framework\Data\Form\AbstractForm->addField('video', 'blfa_file', Array, false)
#7 /var/www/html/magento/vendor/magento/module-backend/Block/Widget/Form.php(195): Magento\Framework\Data\Form\Element\Fieldset->addField('video', 'blfa_file', Array)
#8 /var/www/html/magento/vendor/magento/module-catalog/Block/Adminhtml/Product/Edit/Tab/Attributes.php(51): Magento\Backend\Block\Widget\Form->_setFieldset(Array, Object(Magento\Framework\Data\Form\Element\Fieldset), Array)
#9 /var/www/html/magento/vendor/magento/module-backend/Block/Widget/Form.php(141): Magento\Catalog\Block\Adminhtml\Product\Edit\Tab\Attributes->_prepareForm()
#10 /var/www/html/magento/vendor/magento/framework/View/Element/AbstractBlock.php(656): Magento\Backend\Block\Widget\Form->_beforeToHtml()
#11 /var/www/html/magento/var/generation/Magento/Catalog/Block/Adminhtml/Product/Edit/Tab/Attributes/Interceptor.php(584): Magento\Framework\View\Element\AbstractBlock->toHtml()
#12 /var/www/html/magento/vendor/magento/module-catalog/Block/Adminhtml/Product/Edit/Tabs.php(170): Magento\Catalog\Block\Adminhtml\Product\Edit\Tab\Attributes\Interceptor->toHtml()
#13 /var/www/html/magento/vendor/magento/framework/View/Element/AbstractBlock.php(262): Magento\Catalog\Block\Adminhtml\Product\Edit\Tabs->_prepareLayout()
#14 /var/www/html/magento/vendor/magento/framework/View/Layout/Generator/Block.php(139): Magento\Framework\View\Element\AbstractBlock->setLayout(Object(Magento\Framework\View\Layout\Interceptor))
#15 /var/www/html/magento/vendor/magento/framework/View/Layout/GeneratorPool.php(86): Magento\Framework\View\Layout\Generator\Block->process(Object(Magento\Framework\View\Layout\Reader\Context), Object(Magento\Framework\View\Layout\Generator\Context))
#16 /var/www/html/magento/vendor/magento/framework/View/Layout.php(327): Magento\Framework\View\Layout\GeneratorPool->process(Object(Magento\Framework\View\Layout\Reader\Context), Object(Magento\Framework\View\Layout\Generator\Context))
#17 /var/www/html/magento/var/generation/Magento/Framework/View/Layout/Interceptor.php(89): Magento\Framework\View\Layout->generateElements()
#18 /var/www/html/magento/vendor/magento/framework/View/Layout/Builder.php(129): Magento\Framework\View\Layout\Interceptor->generateElements()
#19 /var/www/html/magento/vendor/magento/framework/View/Page/Builder.php(55): Magento\Framework\View\Layout\Builder->generateLayoutBlocks()
#20 /var/www/html/magento/vendor/magento/framework/View/Layout/Builder.php(65): Magento\Framework\View\Page\Builder->generateLayoutBlocks()
#21 /var/www/html/magento/vendor/magento/framework/View/Layout.php(244): Magento\Framework\View\Layout\Builder->build()
#22 /var/www/html/magento/vendor/magento/framework/View/Layout.php(859): Magento\Framework\View\Layout->build()
#23 /var/www/html/magento/var/generation/Magento/Framework/View/Layout/Interceptor.php(414): Magento\Framework\View\Layout->getBlock('menu')
#24 /var/www/html/magento/vendor/magento/module-backend/Model/View/Result/Page.php(59): Magento\Framework\View\Layout\Interceptor->getBlock('menu')
#25 /var/www/html/magento/var/generation/Magento/Backend/Model/View/Result/Page/Interceptor.php(24): Magento\Backend\Model\View\Result\Page->setActiveMenu('Magento_Catalog...')
#26 /var/www/html/magento/vendor/magento/module-catalog/Controller/Adminhtml/Product/Edit.php(59): Magento\Backend\Model\View\Result\Page\Interceptor->setActiveMenu('Magento_Catalog...')
#27 /var/www/html/magento/var/generation/Magento/Catalog/Controller/Adminhtml/Product/Edit/Interceptor.php(24): Magento\Catalog\Controller\Adminhtml\Product\Edit->execute()
#28 /var/www/html/magento/vendor/magento/framework/App/Action/Action.php(102): Magento\Catalog\Controller\Adminhtml\Product\Edit\Interceptor->execute()
#29 /var/www/html/magento/vendor/magento/module-backend/App/AbstractAction.php(226): Magento\Framework\App\Action\Action->dispatch(Object(Magento\Framework\App\Request\Http))
#30 [internal function]: Magento\Backend\App\AbstractAction->dispatch(Object(Magento\Framework\App\Request\Http))
#31 /var/www/html/magento/vendor/magento/framework/Interception/Interceptor.php(74): call_user_func_array(Array, Array)
#32 /var/www/html/magento/vendor/magento/framework/Interception/Chain/Chain.php(70): Magento\Catalog\Controller\Adminhtml\Product\Edit\Interceptor->___callParent('dispatch', Array)
#33 /var/www/html/magento/vendor/magento/framework/Interception/Chain/Chain.php(63): Magento\Framework\Interception\Chain\Chain->invokeNext('Magento\Catalog...', 'dispatch', Object(Magento\Catalog\Controller\Adminhtml\Product\Edit\Interceptor), Array, 'adminAuthentica...')
#34 /var/www/html/magento/vendor/magento/module-backend/App/Action/Plugin/Authentication.php(143): Magento\Framework\Interception\Chain\Chain->Magento\Framework\Interception\Chain\{closure}(Object(Magento\Framework\App\Request\Http))
#35 [internal function]: Magento\Backend\App\Action\Plugin\Authentication->aroundDispatch(Object(Magento\Catalog\Controller\Adminhtml\Product\Edit\Interceptor), Object(Closure), Object(Magento\Framework\App\Request\Http))
#36 /var/www/html/magento/vendor/magento/framework/Interception/Chain/Chain.php(68): call_user_func_array(Array, Array)
#37 /var/www/html/magento/vendor/magento/framework/Interception/Chain/Chain.php(63): Magento\Framework\Interception\Chain\Chain->invokeNext('Magento\Catalog...', 'dispatch', Object(Magento\Catalog\Controller\Adminhtml\Product\Edit\Interceptor), Array, 'designLoader')
#38 /var/www/html/magento/vendor/magento/framework/App/Action/Plugin/Design.php(39): Magento\Framework\Interception\Chain\Chain->Magento\Framework\Interception\Chain\{closure}(Object(Magento\Framework\App\Request\Http))
#39 [internal function]: Magento\Framework\App\Action\Plugin\Design->aroundDispatch(Object(Magento\Catalog\Controller\Adminhtml\Product\Edit\Interceptor), Object(Closure), Object(Magento\Framework\App\Request\Http))
#40 /var/www/html/magento/vendor/magento/framework/Interception/Chain/Chain.php(68): call_user_func_array(Array, Array)
#41 /var/www/html/magento/vendor/magento/framework/Interception/Interceptor.php(136): Magento\Framework\Interception\Chain\Chain->invokeNext('Magento\Catalog...', 'dispatch', Object(Magento\Catalog\Controller\Adminhtml\Product\Edit\Interceptor), Array, 'adminMassaction...')
#42 /var/www/html/magento/vendor/magento/module-backend/App/Action/Plugin/MassactionKey.php(33): Magento\Catalog\Controller\Adminhtml\Product\Edit\Interceptor->Magento\Framework\Interception\{closure}(Object(Magento\Framework\App\Request\Http))
#43 [internal function]: Magento\Backend\App\Action\Plugin\MassactionKey->aroundDispatch(Object(Magento\Catalog\Controller\Adminhtml\Product\Edit\Interceptor), Object(Closure), Object(Magento\Framework\App\Request\Http))
#44 /var/www/html/magento/vendor/magento/framework/Interception/Interceptor.php(141): call_user_func_array(Array, Array)
#45 /var/www/html/magento/var/generation/Magento/Catalog/Controller/Adminhtml/Product/Edit/Interceptor.php(39): Magento\Catalog\Controller\Adminhtml\Product\Edit\Interceptor->___callPlugins('dispatch', Array, Array)
#46 /var/www/html/magento/vendor/magento/framework/App/FrontController.php(55): Magento\Catalog\Controller\Adminhtml\Product\Edit\Interceptor->dispatch(Object(Magento\Framework\App\Request\Http))
#47 [internal function]: Magento\Framework\App\FrontController->dispatch(Object(Magento\Framework\App\Request\Http))
#48 /var/www/html/magento/vendor/magento/framework/Interception/Interceptor.php(74): call_user_func_array(Array, Array)
#49 /var/www/html/magento/vendor/magento/framework/Interception/Chain/Chain.php(70): Magento\Framework\App\FrontController\Interceptor->___callParent('dispatch', Array)
#50 /var/www/html/magento/vendor/magento/framework/Interception/Interceptor.php(136): Magento\Framework\Interception\Chain\Chain->invokeNext('Magento\Framewo...', 'dispatch', Object(Magento\Framework\App\FrontController\Interceptor), Array, 'install')
#51 /var/www/html/magento/vendor/magento/framework/Module/Plugin/DbStatusValidator.php(69): Magento\Framework\App\FrontController\Interceptor->Magento\Framework\Interception\{closure}(Object(Magento\Framework\App\Request\Http))
#52 [internal function]: Magento\Framework\Module\Plugin\DbStatusValidator->aroundDispatch(Object(Magento\Framework\App\FrontController\Interceptor), Object(Closure), Object(Magento\Framework\App\Request\Http))
#53 /var/www/html/magento/vendor/magento/framework/Interception/Interceptor.php(141): call_user_func_array(Array, Array)
#54 /var/www/html/magento/var/generation/Magento/Framework/App/FrontController/Interceptor.php(26): Magento\Framework\App\FrontController\Interceptor->___callPlugins('dispatch', Array, Array)
#55 /var/www/html/magento/vendor/magento/framework/App/Http.php(115): Magento\Framework\App\FrontController\Interceptor->dispatch(Object(Magento\Framework\App\Request\Http))
#56 /var/www/html/magento/vendor/magento/framework/App/Bootstrap.php(258): Magento\Framework\App\Http->launch()
#57 /var/www/html/magento/index.php(39): Magento\Framework\App\Bootstrap->run(Object(Magento\Framework\App\Http))
#58 {main}
