ayuda con modulo ePosnet

Bueno estoy implementando los metodos de pago, las cuales instalo un modulo de la empresa que tenemos contratado en el negocio para las tarjetas. Ya hice un ticket pero no me responden aun, tal vez ustedes puedan ayudarme mas rapido. Cabe aclarar que solo me pasa cuando quiero ingresar a admin.

Modulo: https://github.com/ePosnet/magento2
Web: http://sd-1592696-h00003.ferozo.net/store/admin

V.Magento: 2.2
PHP: 7.1

Los errores que arroja son los siguientes:
1 exception(s):
Exception #0 (Exception): Warning: DOMDocument::loadXML(): Specification mandate value for attribute readonly in Entity, line: 53 in /home/admin4/public_html/store/vendor/magento/module-config/Model/Config/Structure/Reader.php on line 134

Exception #0 (Exception): Warning: DOMDocument::loadXML(): Specification mandate value for attribute readonly in Entity, line: 53 in /home/admin4/public_html/store/vendor/magento/module-config/Model/Config/Structure/Reader.php on line 134
#0 [internal function]: Magento\Framework\App\ErrorHandler->handler(2, 'DOMDocument::lo...', '/home/admin4/pu...', 134, Array)
#1 /home/admin4/public_html/store/vendor/magento/module-config/Model/Config/Structure/Reader.php(134): DOMDocument->loadXML('<?xml version="...')
#2 /home/admin4/public_html/store/vendor/magento/module-config/Model/Config/Structure/Reader.php(92): Magento\Config\Model\Config\Structure\Reader->processingDocument('<?xml version="...')
#3 /home/admin4/public_html/store/vendor/magento/framework/Config/Reader/Filesystem.php(130): Magento\Config\Model\Config\Structure\Reader->_readFiles(Object(Magento\Framework\Config\FileIterator))
#4 /home/admin4/public_html/store/vendor/magento/framework/Config/Data/Scoped.php(118): Magento\Framework\Config\Reader\Filesystem->read('adminhtml')
#5 /home/admin4/public_html/store/vendor/magento/framework/Config/Data/Scoped.php(96): Magento\Framework\Config\Data\Scoped->_loadScopedData()
#6 /home/admin4/public_html/store/vendor/magento/module-config/Model/Config/Structure.php(127): Magento\Framework\Config\Data\Scoped->get()
#7 /home/admin4/public_html/store/generated/code/Magento/Config/Model/Config/Structure/Interceptor.php(14): Magento\Config\Model\Config\Structure->__construct(Object(Magento\Config\Model\Config\Structure\Data\Interceptor), Object(Magento\Config\Model\Config\Structure\Element\Iterator\Tab), Object(Magento\Config\Model\Config\Structure\Element\FlyweightFactory), Object(Magento\Config\Model\Config\ScopeDefiner))
#8 /home/admin4/public_html/store/vendor/magento/framework/ObjectManager/Factory/AbstractFactory.php(111): Magento\Config\Model\Config\Structure\Interceptor->__construct(Object(Magento\Config\Model\Config\Structure\Data\Interceptor), Object(Magento\Config\Model\Config\Structure\Element\Iterator\Tab), Object(Magento\Config\Model\Config\Structure\Element\FlyweightFactory), Object(Magento\Config\Model\Config\ScopeDefiner))
#9 /home/admin4/public_html/store/vendor/magento/framework/ObjectManager/Factory/Compiled.php(108): Magento\Framework\ObjectManager\Factory\AbstractFactory->createObject('Magento\\Config\\...', Array)
#10 /home/admin4/public_html/store/vendor/magento/framework/ObjectManager/Factory/Compiled.php(150): Magento\Framework\ObjectManager\Factory\Compiled->create('Magento\\Config\\...')
#11 /home/admin4/public_html/store/vendor/magento/framework/ObjectManager/Factory/Compiled.php(79): Magento\Framework\ObjectManager\Factory\Compiled->get('Magento\\Config\\...')
#12 /home/admin4/public_html/store/vendor/magento/framework/ObjectManager/ObjectManager.php(56): Magento\Framework\ObjectManager\Factory\Compiled->create('Magento\\Config\\...', Array)
#13 /home/admin4/public_html/store/generated/code/Magento/Config/Model/ConfigFactory.php(43): Magento\Framework\ObjectManager\ObjectManager->create('\\Magento\\Config...', Array)
#14 /home/admin4/public_html/store/app/code/Codazon/ThemeOptions/Backend/Model/Menu/Builder/Plugin.php(11): Magento\Config\Model\ConfigFactory->create()
#15 /home/admin4/public_html/store/vendor/magento/framework/ObjectManager/Factory/AbstractFactory.php(111): Codazon\ThemeOptions\Backend\Model\Menu\Builder\Plugin->__construct(Object(Magento\Backend\Model\Menu\Item\Factory), Object(Magento\Config\Model\ConfigFactory), Object(Magento\Store\Model\StoreManager))
#16 /home/admin4/public_html/store/vendor/magento/framework/ObjectManager/Factory/Compiled.php(108): Magento\Framework\ObjectManager\Factory\AbstractFactory->createObject('Codazon\\ThemeOp...', Array)
#17 /home/admin4/public_html/store/vendor/magento/framework/ObjectManager/ObjectManager.php(70): Magento\Framework\ObjectManager\Factory\Compiled->create('Codazon\\ThemeOp...')
#18 /home/admin4/public_html/store/vendor/magento/framework/Interception/PluginList/PluginList.php(250): Magento\Framework\ObjectManager\ObjectManager->get('Codazon\\ThemeOp...')
#19 /home/admin4/public_html/store/vendor/magento/framework/Interception/Interceptor.php(144): Magento\Framework\Interception\PluginList\PluginList->getPlugin('Magento\\Backend...', 'codazon_backend...')
#20 /home/admin4/public_html/store/vendor/magento/framework/Interception/Interceptor.php(153): Magento\Backend\Model\Menu\Builder\Interceptor->Magento\Framework\Interception\{closure}(Object(Magento\Backend\Model\Menu))
#21 /home/admin4/public_html/store/generated/code/Magento/Backend/Model/Menu/Builder/Interceptor.php(26): Magento\Backend\Model\Menu\Builder\Interceptor->___callPlugins('getResult', Array, Array)
#22 /home/admin4/public_html/store/vendor/magento/module-backend/Model/Menu/Config.php(148): Magento\Backend\Model\Menu\Builder\Interceptor->getResult(Object(Magento\Backend\Model\Menu))
#23 /home/admin4/public_html/store/vendor/magento/module-backend/Model/Menu/Config.php(111): Magento\Backend\Model\Menu\Config->_initMenu()
#24 /home/admin4/public_html/store/vendor/magento/module-backend/Model/Url.php(361): Magento\Backend\Model\Menu\Config->getMenu()
#25 /home/admin4/public_html/store/vendor/magento/module-backend/Model/Url.php(321): Magento\Backend\Model\Url->_getMenu()
#26 /home/admin4/public_html/store/vendor/magento/module-backend/App/AbstractAction.php(276): Magento\Backend\Model\Url->getStartupPageUrl()
#27 /home/admin4/public_html/store/vendor/magento/module-backend/App/AbstractAction.php(208): Magento\Backend\App\AbstractAction->_processUrlKeys()
#28 /home/admin4/public_html/store/vendor/magento/framework/Interception/Interceptor.php(58): Magento\Backend\App\AbstractAction->dispatch(Object(Magento\Framework\App\Request\Http))
#29 /home/admin4/public_html/store/vendor/magento/framework/Interception/Interceptor.php(138): Magento\Backend\Controller\Adminhtml\Index\Index\Interceptor->___callParent('dispatch', Array)
#30 /home/admin4/public_html/store/vendor/magento/module-backend/App/Action/Plugin/Authentication.php(143): Magento\Backend\Controller\Adminhtml\Index\Index\Interceptor->Magento\Framework\Interception\{closure}(Object(Magento\Framework\App\Request\Http))
#31 /home/admin4/public_html/store/vendor/magento/framework/Interception/Interceptor.php(135): Magento\Backend\App\Action\Plugin\Authentication->aroundDispatch(Object(Magento\Backend\Controller\Adminhtml\Index\Index\Interceptor), Object(Closure), Object(Magento\Framework\App\Request\Http))
#32 /home/admin4/public_html/store/vendor/magento/framework/Interception/Interceptor.php(153): Magento\Backend\Controller\Adminhtml\Index\Index\Interceptor->Magento\Framework\Interception\{closure}(Object(Magento\Framework\App\Request\Http))
#33 /home/admin4/public_html/store/generated/code/Magento/Backend/Controller/Adminhtml/Index/Index/Interceptor.php(26): Magento\Backend\Controller\Adminhtml\Index\Index\Interceptor->___callPlugins('dispatch', Array, NULL)
#34 /home/admin4/public_html/store/vendor/magento/framework/App/FrontController.php(55): Magento\Backend\Controller\Adminhtml\Index\Index\Interceptor->dispatch(Object(Magento\Framework\App\Request\Http))
#35 /home/admin4/public_html/store/vendor/magento/framework/Interception/Interceptor.php(58): Magento\Framework\App\FrontController->dispatch(Object(Magento\Framework\App\Request\Http))
#36 /home/admin4/public_html/store/vendor/magento/framework/Interception/Interceptor.php(138): Magento\Framework\App\FrontController\Interceptor->___callParent('dispatch', Array)
#37 /home/admin4/public_html/store/vendor/magento/framework/Interception/Interceptor.php(153): Magento\Framework\App\FrontController\Interceptor->Magento\Framework\Interception\{closure}(Object(Magento\Framework\App\Request\Http))
#38 /home/admin4/public_html/store/generated/code/Magento/Framework/App/FrontController/Interceptor.php(26): Magento\Framework\App\FrontController\Interceptor->___callPlugins('dispatch', Array, Array)
#39 /home/admin4/public_html/store/vendor/magento/framework/App/Http.php(135): Magento\Framework\App\FrontController\Interceptor->dispatch(Object(Magento\Framework\App\Request\Http))
#40 /home/admin4/public_html/store/vendor/magento/framework/App/Bootstrap.php(256): Magento\Framework\App\Http->launch()
#41 /home/admin4/public_html/store/index.php(44): Magento\Framework\App\Bootstrap->run(Object(Magento\Framework\App\Http\Interceptor))
#42 {main}

 

Hola como estas?, no aun no lo puedo solucionar. Sigo esperando ticket de la empresa de posnet para ver si me pueden dar una mano. Ustedes se dan cuenta que es lo q dice?, trate de cambiar la llamada readonly a solo, a 1 a true y nada, asique viene por otro lado.

 

Me respondieron que iban a ver mi caso con los desarrolladores, y me dieron otra versión para probar, esta esta tirando otro error con una llamado ReadOnly, alguna idea?

1 exception(s):
Exception #0 (Magento\Framework\Exception\LocalizedException): Invalid XML in file /home/admin4/public_html/store/app/code/Firstdata/Gateway/etc/adminhtml/system.xml:
Element 'field', attribute 'readOnly': The attribute 'readOnly' is not allowed.
Line: 50

Element 'validate': This element is not expected. Expected is ( field ).
Line: 89


Exception #0 (Magento\Framework\Exception\LocalizedException): Invalid XML in file /home/admin4/public_html/store/app/code/Firstdata/Gateway/etc/adminhtml/system.xml:
Element 'field', attribute 'readOnly': The attribute 'readOnly' is not allowed.
Line: 50

Element 'validate': This element is not expected. Expected is ( field ).
Line: 89

#0 /home/admin4/public_html/store/vendor/magento/framework/Config/Reader/Filesystem.php(130): Magento\Config\Model\Config\Structure\Reader->_readFiles(Object(Magento\Framework\Config\FileIterator))
#1 /home/admin4/public_html/store/vendor/magento/framework/Config/Data/Scoped.php(118): Magento\Framework\Config\Reader\Filesystem->read('adminhtml')
#2 /home/admin4/public_html/store/vendor/magento/framework/Config/Data/Scoped.php(96): Magento\Framework\Config\Data\Scoped->_loadScopedData()
#3 /home/admin4/public_html/store/generated/code/Magento/Config/Model/Config/Structure/Data/Interceptor.php(37): Magento\Framework\Config\Data\Scoped->get(NULL, NULL)
#4 /home/admin4/public_html/store/vendor/magento/module-config/Model/Config/Structure.php(127): Magento\Config\Model\Config\Structure\Data\Interceptor->get()
#5 /home/admin4/public_html/store/generated/code/Magento/Config/Model/Config/Structure/Interceptor.php(14): Magento\Config\Model\Config\Structure->__construct(Object(Magento\Config\Model\Config\Structure\Data\Interceptor), Object(Magento\Config\Model\Config\Structure\Element\Iterator\Tab), Object(Magento\Config\Model\Config\Structure\Element\FlyweightFactory), Object(Magento\Config\Model\Config\ScopeDefiner))
#6 /home/admin4/public_html/store/vendor/magento/framework/ObjectManager/Factory/AbstractFactory.php(111): Magento\Config\Model\Config\Structure\Interceptor->__construct(Object(Magento\Config\Model\Config\Structure\Data\Interceptor), Object(Magento\Config\Model\Config\Structure\Element\Iterator\Tab), Object(Magento\Config\Model\Config\Structure\Element\FlyweightFactory), Object(Magento\Config\Model\Config\ScopeDefiner))
#7 /home/admin4/public_html/store/vendor/magento/framework/ObjectManager/Factory/Dynamic/Developer.php(66): Magento\Framework\ObjectManager\Factory\AbstractFactory->createObject('Magento\\Config\\...', Array)
#8 /home/admin4/public_html/store/vendor/magento/framework/ObjectManager/ObjectManager.php(70): Magento\Framework\ObjectManager\Factory\Dynamic\Developer->create('Magento\\Config\\...')
#9 /home/admin4/public_html/store/vendor/magento/framework/ObjectManager/Factory/AbstractFactory.php(144): Magento\Framework\ObjectManager\ObjectManager->get('Magento\\Config\\...')
#10 /home/admin4/public_html/store/vendor/magento/framework/ObjectManager/Factory/AbstractFactory.php(230): Magento\Framework\ObjectManager\Factory\AbstractFactory->resolveArgument(Array, 'Magento\\Config\\...', NULL, 'configStructure', 'Magento\\Config\\...')
#11 /home/admin4/public_html/store/vendor/magento/framework/ObjectManager/Factory/Dynamic/Developer.php(34): Magento\Framework\ObjectManager\Factory\AbstractFactory->resolveArgumentsInRuntime('Magento\\Config\\...', Array, Array)
#12 /home/admin4/public_html/store/vendor/magento/framework/ObjectManager/Factory/Dynamic/Developer.php(59): Magento\Framework\ObjectManager\Factory\Dynamic\Developer->_resolveArguments('Magento\\Config\\...', Array, Array)
#13 /home/admin4/public_html/store/vendor/magento/framework/ObjectManager/ObjectManager.php(56): Magento\Framework\ObjectManager\Factory\Dynamic\Developer->create('Magento\\Config\\...', Array)
#14 /home/admin4/public_html/store/vendor/magento/framework/App/ActionFactory.php(40): Magento\Framework\ObjectManager\ObjectManager->create('Magento\\Config\\...')
#15 /home/admin4/public_html/store/vendor/magento/framework/App/Router/Base.php(297): Magento\Framework\App\ActionFactory->create('Magento\\Config\\...')
#16 /home/admin4/public_html/store/vendor/magento/framework/App/Router/Base.php(158): Magento\Framework\App\Router\Base->matchAction(Object(Magento\Framework\App\Request\Http), Array)
#17 /home/admin4/public_html/store/vendor/magento/framework/App/FrontController.php(50): Magento\Framework\App\Router\Base->match(Object(Magento\Framework\App\Request\Http))
#18 /home/admin4/public_html/store/vendor/magento/framework/Interception/Interceptor.php(58): Magento\Framework\App\FrontController->dispatch(Object(Magento\Framework\App\Request\Http))
#19 /home/admin4/public_html/store/vendor/magento/framework/Interception/Interceptor.php(138): Magento\Framework\App\FrontController\Interceptor->___callParent('dispatch', Array)
#20 /home/admin4/public_html/store/vendor/magento/framework/Interception/Interceptor.php(153): Magento\Framework\App\FrontController\Interceptor->Magento\Framework\Interception\{closure}(Object(Magento\Framework\App\Request\Http))
#21 /home/admin4/public_html/store/generated/code/Magento/Framework/App/FrontController/Interceptor.php(26): Magento\Framework\App\FrontController\Interceptor->___callPlugins('dispatch', Array, Array)
#22 /home/admin4/public_html/store/vendor/magento/framework/App/Http.php(135): Magento\Framework\App\FrontController\Interceptor->dispatch(Object(Magento\Framework\App\Request\Http))
#23 /home/admin4/public_html/store/generated/code/Magento/Framework/App/Http/Interceptor.php(24): Magento\Framework\App\Http->launch()
#24 /home/admin4/public_html/store/vendor/magento/framework/App/Bootstrap.php(256): Magento\Framework\App\Http\Interceptor->launch()
#25 /home/admin4/public_html/store/index.php(44): Magento\Framework\App\Bootstrap->run(Object(Magento\Framework\App\Http\Interceptor))
#26 {main}