WP RSS Aggregator Error

WP RSS Aggregator has encountered a critical error. The safest course of action is to deactivate the plugin and any of its add-ons on this site using the button below. Once you’ve done that, you may reactivate them and start using the plugins again. If the problem persists, please copy the below error and send it to our support team with an explanation of when and how it happened.

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Error Message:
Argument 1 passed to RebelCode\Entities\Properties\Property::getValue() must implement interface RebelCode\Entities\Api\EntityInterface, null given, called in /var/www/localmedia.dk/365fodbold.dk/wp-content/plugins/wp-rss-aggregator/src/Entities/Properties/WpraItemSourceProperty.php on line 85 (wp-content/plugins/wp-rss-aggregator/lib/Entities/Properties/Property.php:39)
Stack trace:
#0 /var/www/localmedia.dk/365fodbold.dk/wp-content/plugins/wp-rss-aggregator/src/Entities/Properties/WpraItemSourceProperty.php(85): RebelCode\Entities\Properties\Property->getValue(NULL)
#1 /var/www/localmedia.dk/365fodbold.dk/wp-content/plugins/wp-rss-aggregator/lib/Entities/Entity.php(75): RebelCode\Wpra\Core\Entities\Properties\WpraItemSourceProperty->getValue(Object(RebelCode\Entities\Entity))
#2 /var/www/localmedia.dk/365fodbold.dk/wp-content/plugins/wp-rss-aggregator/lib/Entities/Entity.php(145): RebelCode\Entities\Entity->get('source_name')
#3 /var/www/localmedia.dk/365fodbold.dk/wp-content/plugins/wp-rss-aggregator/src/Data/EntityDataSet.php(94): RebelCode\Entities\Entity->export()
#4 /var/www/localmedia.dk/365fodbold.dk/wp-content/plugins/wp-rss-aggregator/src/Util/IteratorDelegateTrait.php(85): RebelCode\Wpra\Core\Data\EntityDataSet->getIterator()
#5 [internal function]: RebelCode\Wpra\Core\Data\EntityDataSet->rewind()
#6 /var/www/localmedia.dk/365fodbold.dk/wp-content/plugins/wp-rss-aggregator/src/Util/IteratorDelegateTrait.php(58): iterator_to_array(Object(RebelCode\Wpra\Core\Data\EntityDataSet))
#7 /var/www/localmedia.dk/365fodbold.dk/wp-content/plugins/wp-rss-aggregator/src/Util/IteratorDelegateTrait.php(126): RebelCode\Wpra\Core\Data\AbstractDataSet->yieldIterationValue(Object(RebelCode\Wpra\Core\Data\EntityDataSet))
#8 /var/www/localmedia.dk/365fodbold.dk/wp-content/plugins/wp-rss-aggregator/vendor/twig/twig/src/Environment.php(497) : eval()'d code(63): RebelCode\Wpra\Core\Data\AbstractDataSet->current()
#9 /var/www/localmedia.dk/365fodbold.dk/wp-content/plugins/wp-rss-aggregator/vendor/twig/twig/src/Template.php(443): __TwigTemplate_52ba4eb1e577a8feb739ee192efdfd0397ce345151feba335122dd0c6437f5bf->doDisplay(Array, Array)
#10 /var/www/localmedia.dk/365fodbold.dk/wp-content/plugins/wp-rss-aggregator/vendor/twig/twig/src/Template.php(414): Twig\Template->displayWithErrorHandling(Array, Array)
#11 /var/www/localmedia.dk/365fodbold.dk/wp-content/plugins/wp-rss-aggregator/vendor/twig/twig/src/Template.php(422): Twig\Template->display(Array)
#12 /var/www/localmedia.dk/365fodbold.dk/wp-content/plugins/wp-rss-aggregator/vendor/twig/twig/src/Extension/CoreExtension.php(1584): Twig\Template->render(Array)
#13 /var/www/localmedia.dk/365fodbold.dk/wp-content/plugins/wp-rss-aggregator/vendor/twig/twig/src/Environment.php(497) : eval()'d code(43): twig_include(Object(Twig\Environment), Array, 'feeds/list/feed...')
#14 /var/www/localmedia.dk/365fodbold.dk/wp-content/plugins/wp-rss-aggregator/vendor/twig/twig/src/Template.php(443): __TwigTemplate_84740162f2e77ff400d458c6303496f168ad50666766e07549446844627399e1->doDisplay(Array, Array)
#15 /var/www/localmedia.dk/365fodbold.dk/wp-content/plugins/wp-rss-aggregator/vendor/twig/twig/src/Template.php(414): Twig\Template->displayWithErrorHandling(Array, Array)
#16 /var/www/localmedia.dk/365fodbold.dk/wp-content/plugins/wp-rss-aggregator/vendor/twig/twig/src/Template.php(422): Twig\Template->display(Array)
#17 /var/www/localmedia.dk/365fodbold.dk/wp-content/plugins/wp-rss-aggregator/vendor/twig/twig/src/TemplateWrapper.php(47): Twig\Template->render(Array, Array)
#18 /var/www/localmedia.dk/365fodbold.dk/wp-content/plugins/wp-rss-aggregator/src/Templates/TwigTemplate.php(67): Twig\TemplateWrapper->render(Array)
#19 /var/www/localmedia.dk/365fodbold.dk/wp-content/plugins/wp-rss-aggregator/src/Templates/Feeds/Types/AbstractFeedTemplateType.php(55): RebelCode\Wpra\Core\Templates\TwigTemplate->render(Array)
#20 /var/www/localmedia.dk/365fodbold.dk/wp-content/plugins/wp-rss-aggregator/src/Templates/Feeds/MasterFeedsTemplate.php(189): RebelCode\Wpra\Core\Templates\Feeds\Types\AbstractFeedTemplateType->render(Array)
#21 /var/www/localmedia.dk/365fodbold.dk/wp-content/plugins/wp-rss-aggregator/src/Handlers/FeedShortcode/FeedsShortcodeHandler.php(48): RebelCode\Wpra\Core\Templates\Feeds\MasterFeedsTemplate->render(Array)
#22 /var/www/localmedia.dk/365fodbold.dk/wp-includes/shortcodes.php(381): RebelCode\Wpra\Core\Handlers\FeedShortcode\FeedsShortcodeHandler->__invoke(Array, '', 'wp-rss-aggregat...')
#23 [internal function]: do_shortcode_tag(Array)
#24 /var/www/localmedia.dk/365fodbold.dk/wp-includes/shortcodes.php(256): preg_replace_callback('/\\[(\\[?)(wp\\-rs...', 'do_shortcode_ta...', '

Fodbold nyh...') #25 /var/www/localmedia.dk/365fodbold.dk/wp-includes/class-wp-hook.php(292): do_shortcode('

Fodbold nyh...') #26 /var/www/localmedia.dk/365fodbold.dk/wp-includes/plugin.php(212): WP_Hook->apply_filters('

Fodbold nyh...', Array) #27 /var/www/localmedia.dk/365fodbold.dk/wp-includes/post-template.php(253): apply_filters('the_content', '

Fodbold nyh...') #28 /var/www/localmedia.dk/365fodbold.dk/wp-content/themes/kodiak-football-sport/template-parts/content-page.php(20): the_content() #29 /var/www/localmedia.dk/365fodbold.dk/wp-includes/template.php(732): require('/var/www/localm...') #30 /var/www/localmedia.dk/365fodbold.dk/wp-includes/template.php(676): load_template('/var/www/localm...', false, Array) #31 /var/www/localmedia.dk/365fodbold.dk/wp-includes/general-template.php(204): locate_template(Array, true, false, Array) #32 /var/www/localmedia.dk/365fodbold.dk/wp-content/themes/kodiak-football-sport/page.php(54): get_template_part('template-parts/...', 'page') #33 /var/www/localmedia.dk/365fodbold.dk/wp-includes/template-loader.php(106): include('/var/www/localm...') #34 /var/www/localmedia.dk/365fodbold.dk/wp-blog-header.php(19): require_once('/var/www/localm...') #35 /var/www/localmedia.dk/365fodbold.dk/index.php(17): require('/var/www/localm...') #36 {main}