deprecation notices/errors?

These are a bunch of errors that keep showing up, I am not sure how much they are interfering with other things, or how far it compromises security, or functionality of the plugin, but wanted to share it as feedback. If you can fix it, that would be great, otherwise, I would still be interested in feedback on what is actually going on here, and if it is something I can fix.

Detail below (I have put the full text of one of the things here, as it was really extensive – the rest are on snipboard.io image files, and all but one are different (but a lot shorter) than those there:

Snipboard.io

Snipboard.io

Snipboard.io – this is a set of three, but the detail of one of them goes on and on (and there’s another very much like it, starting at line 221, which I have set out in full below:

Return type of Twig\Node\Node::getIterator() should either be compatible with IteratorAggregate::getIterator(): Traversable, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice-

1. wp-content/plugins/wp-rss-aggregator/vendor/twig/twig/src/Node/Node.php:221
2. Composer\Autoload\{closure}()
   wp-content/plugins/query-monitor/vendor/composer/ClassLoader.php:427
3. Composer\Autoload\ClassLoader->loadClass()
   wp-content/plugins/query-monitor/vendor/composer/ClassLoader.php:427
4. class_exists('Twig\Node\Node')
   wp-content/plugins/wp-rss-aggregator/vendor/twig/twig/src/TwigFilter.php:128
5. Composer\Autoload\{closure}()
   wp-content/plugins/query-monitor/vendor/composer/ClassLoader.php:427
6. Composer\Autoload\ClassLoader->loadClass()
   wp-content/plugins/wp-rss-aggregator/vendor/twig/twig/src/Extension/CoreExtension.php:168
7. Twig\Extension\CoreExtension->getFilters()
   wp-content/plugins/wp-rss-aggregator/vendor/twig/twig/src/Environment.php:1547
8. Twig\Environment->initExtension()
   wp-content/plugins/wp-rss-aggregator/vendor/twig/twig/src/Environment.php:1534
9. Twig\Environment->initExtensions()
   wp-content/plugins/wp-rss-aggregator/vendor/twig/twig/src/Environment.php:1455
10. Twig\Environment->getUnaryOperators()
    wp-content/plugins/wp-rss-aggregator/vendor/twig/twig/src/Lexer.php:492
11. Twig\Lexer->getOperatorRegex()
    wp-content/plugins/wp-rss-aggregator/vendor/twig/twig/src/Lexer.php:115
12. Twig\Lexer->__construct()
    wp-content/plugins/wp-rss-aggregator/vendor/twig/twig/src/Environment.php:693
13. Twig\Environment->tokenize()
    wp-content/plugins/wp-rss-aggregator/vendor/twig/twig/src/Environment.php:793
14. Twig\Environment->compileSource()
    wp-content/plugins/wp-rss-aggregator/vendor/twig/twig/src/Environment.php:482
15. Twig\Environment->loadClass()
    wp-content/plugins/wp-rss-aggregator/vendor/twig/twig/src/Environment.php:445
16. Twig\Environment->loadTemplate()
    wp-content/plugins/wp-rss-aggregator/vendor/twig/twig/src/Environment.php:423
17. Twig\Environment->load()
    wp-content/plugins/wp-rss-aggregator/src/Data/Collections/TwigTemplateCollection.php:74
18. RebelCode\W\C\D\C\TwigTemplateCollection->has()
    wp-content/plugins/wp-rss-aggregator/src/Data/AbstractDataSet.php:49
19. RebelCode\W\C\D\AbstractDataSet->offsetExists()
    wp-content/plugins/wp-rss-aggregator/src/Data/AbstractDataSet.php:28
20. RebelCode\W\C\D\AbstractDataSet->offsetGet()
    wp-content/plugins/wp-rss-aggregator/src/Modules/FeedTemplatesModule.php:305
21. RebelCode\W\C\M\FeedTemplatesModule->RebelCode\W\C\M\{closure}()
    wp-content/plugins/wp-rss-aggregator/src/Modules/FeedTemplatesModule.php:305
22. RebelCode\W\C\C\ModuleContainer->get()
    wp-content/plugins/wp-rss-aggregator/src/Container/WpFilterContainer.php:43
23. RebelCode\W\C\C\WpFilterContainer->get()
    wp-content/plugins/wp-rss-aggregator/src/Modules/FeedTemplatesModule.php:271
24. RebelCode\W\C\M\FeedTemplatesModule->RebelCode\W\C\M\{closure}()
    wp-content/plugins/wp-rss-aggregator/src/Modules/FeedTemplatesModule.php:271
25. RebelCode\W\C\C\ModuleContainer->get()
    wp-content/plugins/wp-rss-aggregator/src/Container/WpFilterContainer.php:43
26. RebelCode\W\C\C\WpFilterContainer->get()
    wp-content/plugins/wp-rss-aggregator/src/Modules/FeedTemplatesModule.php:782
27. RebelCode\W\C\M\FeedTemplatesModule->RebelCode\W\C\M\{closure}()
    wp-content/plugins/wp-rss-aggregator/src/Container/ModuleContainer.php:121
28. RebelCode\W\C\C\ModuleContainer->RebelCode\W\C\C\{closure}()
    wp-content/plugins/wp-rss-aggregator/src/Container/ModuleContainer.php:121
29. RebelCode\W\C\C\ModuleContainer->get()
    wp-content/plugins/wp-rss-aggregator/src/Container/WpFilterContainer.php:43
30. RebelCode\W\C\C\WpFilterContainer->get()
    wp-content/plugins/wp-rss-aggregator/src/Modules/FeedSourcesModule.php:260
31. RebelCode\W\C\M\FeedSourcesModule->RebelCode\W\C\M\{closure}()
    wp-content/plugins/wp-rss-aggregator/src/Modules/FeedSourcesModule.php:260
32. RebelCode\W\C\C\ModuleContainer->get()
    wp-content/plugins/wp-rss-aggregator/src/Container/WpFilterContainer.php:43
33. RebelCode\W\C\C\WpFilterContainer->get()
    wp-content/plugins/wp-rss-aggregator/src/Modules/FeedSourcesModule.php:271
34. RebelCode\W\C\M\FeedSourcesModule->RebelCode\W\C\M\{closure}()
    wp-content/plugins/wp-rss-aggregator/src/Modules/FeedSourcesModule.php:271
35. RebelCode\W\C\C\ModuleContainer->get()
    wp-content/plugins/wp-rss-aggregator/src/Container/WpFilterContainer.php:43
36. RebelCode\W\C\C\WpFilterContainer->get()
    wp-content/plugins/wp-rss-aggregator/src/Modules/FeedSourcesModule.php:386
37. RebelCode\W\C\M\FeedSourcesModule->run()
    wp-content/plugins/wp-rss-aggregator/src/ModularModule.php:89
38. RebelCode\W\C\ModularModule->run()
    wp-content/plugins/wp-rss-aggregator/wp-rss-aggregator.php:363
39. wpra_run()
    wp-includes/class-wp-hook.php:324
40. do_action('plugins_loaded')
    wp-settings.php:550

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