The following actions uses node12 which is deprecated and will be forced to run on node16: actions/setup-dotnet@v1. For more info: https://github.blog/changelog/2023-06-13-github-actions-all-actions-will-run-on-node16-instead-of-node12-by-default/

The following actions use a deprecated Node.js version and will be forced to run on node20: actions/checkout@v3, actions/setup-dotnet@v1. For more info: https://github.blog/changelog/2024-03-07-github-actions-all-actions-will-run-on-node20-instead-of-node16-by-default/

Possible null reference argument for parameter 'tag' in 'Task<Tag> TagRepository.UpdateTag(Tag tag, Tag parentTag)'.

Possible null reference argument for parameter 'parentTag' in 'Task<Tag> TagRepository.UpdateTag(Tag tag, Tag parentTag)'.

Possible null reference argument for parameter 'item' in 'bool List<Article>.Contains(Article item)'.

Dereference of a possibly null reference.

Possible null reference argument for parameter 'tags' in 'Task<List<Tag>> TagRepository.GetMatchingTags(List<string> tags)'.

Argument of type 'IRuleBuilderInitial<CreateArticle.CreateArticleCommand, List<string>?>' cannot be used for parameter 'ruleBuilder' of type 'IRuleBuilder<CreateArticle.CreateArticleCommand, List<string>>' in 'IRuleBuilderOptions<CreateArticleCommand, List<string>> TagValidators.TagsExist<CreateArticleCommand>(IRuleBuilder<CreateArticleCommand, List<string>> ruleBuilder)' due to differences in the nullability of reference types.

Possible null reference argument for parameter 'article' in 'ArticleResponse ArticleResponse.FromArticle(Article article)'.

Possible null reference argument for parameter 'article' in 'Task<Article> ArticleRepository.UpdateArticle(Article article, User user, string content, string? summary = null)'.

Possible null reference argument for parameter 'user' in 'Task<Article> ArticleRepository.UpdateArticle(Article article, User user, string content, string? summary = null)'.