Attempted to load class "TemplatesComponent" from namespace "Joomla\Component\Templates\Administrator\Extension".
Did you forget a "use" statement for another namespace?

Symfony\Component\ErrorHandler\Error\ClassNotFoundError:
Attempted to load class "TemplatesComponent" from namespace "Joomla\Component\Templates\Administrator\Extension".
Did you forget a "use" statement for another namespace?

  at /home4/palma140/public_html/administrator/components/com_templates/services/provider.php:46
  at Joomla\DI\ServiceProviderInterface@anonymous/home4/palma140/public_html/administrator/components/com_templates/services/provider.php:28$14->{closure}(object(Container))
     (/home4/palma140/public_html/libraries/vendor/joomla/di/src/ContainerResource.php:182)
  at Joomla\DI\ContainerResource->getInstance()
     (/home4/palma140/public_html/libraries/vendor/joomla/di/src/Container.php:96)
  at Joomla\DI\Container->get('Joomla\\CMS\\Extension\\ComponentInterface')
     (/home4/palma140/public_html/libraries/src/Extension/ExtensionManagerTrait.php:177)
  at Joomla\CMS\Application\CMSApplication->loadExtension('Joomla\\CMS\\Extension\\ComponentInterface', 'templates', '/home4/palma140/public_html/administrator/components/com_templates')
     (/home4/palma140/public_html/libraries/src/Extension/ExtensionManagerTrait.php:51)
  at Joomla\CMS\Application\CMSApplication->bootComponent('templates')
     (/home4/palma140/public_html/libraries/src/Application/SiteApplication.php:452)
  at Joomla\CMS\Application\SiteApplication->getTemplate(true)
     (/home4/palma140/public_html/libraries/src/Error/Renderer/HtmlRenderer.php:50)
  at Joomla\CMS\Error\Renderer\HtmlRenderer->render(object(RuntimeException))
     (/home4/palma140/public_html/libraries/src/Exception/ExceptionHandler.php:126)
  at Joomla\CMS\Exception\ExceptionHandler::render(object(RuntimeException))
     (/home4/palma140/public_html/libraries/src/Exception/ExceptionHandler.php:72)
  at Joomla\CMS\Exception\ExceptionHandler::handleException(object(RuntimeException))
     (/home4/palma140/public_html/libraries/src/Application/CMSApplication.php:322)
  at Joomla\CMS\Application\CMSApplication->execute()
     (/home4/palma140/public_html/includes/app.php:61)
  at require_once('/home4/palma140/public_html/includes/app.php')
     (/home4/palma140/public_html/index.php:32)                

RuntimeException:
Failed to start the session because headers have already been sent by "/home4/palma140/public_html/libraries/namespacemap.php" at line 108.

  at /home4/palma140/public_html/libraries/vendor/joomla/session/src/Storage/NativeStorage.php:473
  at Joomla\Session\Storage\NativeStorage->start()
     (/home4/palma140/public_html/libraries/src/Session/Storage/JoomlaStorage.php:295)
  at Joomla\CMS\Session\Storage\JoomlaStorage->start()
     (/home4/palma140/public_html/libraries/vendor/joomla/session/src/Session.php:406)
  at Joomla\Session\Session->start()
     (/home4/palma140/public_html/libraries/vendor/joomla/session/src/Session.php:333)
  at Joomla\Session\Session->has('user')
     (/home4/palma140/public_html/libraries/src/Session/Session.php:194)
  at Joomla\CMS\Session\Session->get('user')
     (/home4/palma140/public_html/libraries/src/Factory.php:372)
  at Joomla\CMS\Factory::getUser()
     (/home4/palma140/public_html/libraries/src/Application/SiteApplication.php:562)
  at Joomla\CMS\Application\SiteApplication->initialiseApp()
     (/home4/palma140/public_html/libraries/src/Application/SiteApplication.php:226)
  at Joomla\CMS\Application\SiteApplication->doExecute()
     (/home4/palma140/public_html/libraries/src/Application/CMSApplication.php:293)
  at Joomla\CMS\Application\CMSApplication->execute()
     (/home4/palma140/public_html/includes/app.php:61)
  at require_once('/home4/palma140/public_html/includes/app.php')
     (/home4/palma140/public_html/index.php:32)