Non-nullable property 'Bron' must contain a non-null value when exiting constructor. Consider declaring the property as nullable.

'IDocumentStore.OpenSession(DocumentTracking, IsolationLevel)' is obsolete: 'Opening a session without explicitly providing desired type may be dropped in next Marten version.

'IDocumentStore.OpenSession(DocumentTracking, IsolationLevel)' is obsolete: 'Opening a session without explicitly providing desired type may be dropped in next Marten version.

'IDocumentStore.OpenSession(DocumentTracking, IsolationLevel)' is obsolete: 'Opening a session without explicitly providing desired type may be dropped in next Marten version.

Non-nullable field '_allowedTypes' must contain a non-null value when exiting constructor. Consider declaring the field as nullable.

Possible null reference argument for parameter 'parentId' in 'Activity Activity.SetParentId(string parentId)'.

Possible null reference argument for parameter 'uriString' in 'Uri.Uri(string uriString)'.

Possible null reference argument for parameter 'uriString' in 'Uri.Uri(string uriString)'.

Possible null reference argument for parameter 'id' in 'AtomFeedConfiguration.AtomFeedConfiguration(string id, string title, string subtitle, string generatorTitle, string generatorUri, string generatorVersion, string rights, DateTimeOffset updated, SyndicationPerson author, SyndicationLink selfUri, List<SyndicationLink> alternateUris, List<SyndicationLink> relatedUris)'.

Possible null reference argument for parameter 'title' in 'AtomFeedConfiguration.AtomFeedConfiguration(string id, string title, string subtitle, string generatorTitle, string generatorUri, string generatorVersion, string rights, DateTimeOffset updated, SyndicationPerson author, SyndicationLink selfUri, List<SyndicationLink> alternateUris, List<SyndicationLink> relatedUris)'.

Non-nullable property 'Bron' must contain a non-null value when exiting constructor. Consider declaring the property as nullable.

'IDocumentStore.OpenSession(DocumentTracking, IsolationLevel)' is obsolete: 'Opening a session without explicitly providing desired type may be dropped in next Marten version.

'IDocumentStore.OpenSession(DocumentTracking, IsolationLevel)' is obsolete: 'Opening a session without explicitly providing desired type may be dropped in next Marten version.

'IDocumentStore.OpenSession(DocumentTracking, IsolationLevel)' is obsolete: 'Opening a session without explicitly providing desired type may be dropped in next Marten version.

Non-nullable field '_allowedTypes' must contain a non-null value when exiting constructor. Consider declaring the field as nullable.

Possible null reference argument for parameter 'parentId' in 'Activity Activity.SetParentId(string parentId)'.

Possible null reference argument for parameter 'postgreSqlOptions' in 'void ConfigurationExtensions.ThrowIfInvalid(PostgreSqlOptionsSection postgreSqlOptions)'.

Dereference of a possibly null reference.

Possible null reference argument for parameter 'uriString' in 'Uri.Uri(string uriString)'.