Fix to avoid errors due to Community Rating - #1

Hi,

Thanks for your fork of that plugin, it allows me to use it with my self-hosted mail.

While running, the scraper was sending errors like this on some of my library contents and failing :

[NLP]: [2025-03-16] :: [13:11:36] - [ERR] An error has occured: Error: SQLitePCL.pretty.SQLiteException: 14 values for 13 columns
at SQLitePCL.pretty.SQLiteException.Throw(Int32 rc, Int32 extended, String msg)
at SQLitePCL.pretty.SQLiteException.CheckOk(sqlite3 db, Int32 rc)
at SQLitePCL.pretty.SQLiteDatabaseConnection.PrepareStatement(String sql, String& tail)
at SQLitePCL.pretty.DatabaseConnection.PrepareStatement(IDatabaseConnection This, String sql)
at SQLitePCL.pretty.DatabaseConnection.Execute(IDatabaseConnection This, String sql)
at Jellyfin.Plugin.Newsletters.Scripts.SCRAPER.Scraper.BuildObjs(List`1 items, String type)
at Jellyfin.Plugin.Newsletters.Scripts.SCRAPER.Scraper.BuildJsonObjsToCurrScanfile()
at Jellyfin.Plugin.Newsletters.Scripts.SCRAPER.Scraper.GetSeriesData()

due to the fact that it was trying to insert a line like this :

INSERT INTO CurrRunData (Filename, Title, Season, Episode, SeriesOverview, ImageURL, ItemID, PosterPath, Type, PremiereYear, RunTime, OfficialRating, CommunityRating) VALUES ('
/123.mp4','Serie name',0,4,'Overview of the serie','','483b094f92c1775837283820166b5dbd','/var/lib/jellyfin/metadata/library/48/483b094f92c1775837283820166b5dbd/poster.jpg
','Series','2021',44,'FR-18',6,9);

6,9 being the Community Rating found for the episode, but as it contains a comma, the insert fails.

So I converted the value into an int but then I got

[ERR] An error has occured: System.InvalidOperationException: Nullable object must have a value.
at System.Nullable1.get_Value() at Jellyfin.Plugin.Newsletters.Scripts.SCRAPER.Scraper.BuildObjs(List1 items, String type)
at Jellyfin.Plugin.Newsletters.Scripts.SCRAPER.Scraper.BuildJsonObjsToCurrScanfile()
at Jellyfin.Plugin.Newsletters.Scripts.SCRAPER.Scraper.GetSeriesData()

so I added a test to verify that the value is not null.

So far it has been able to scrap my entire library, so it's much better. Hope this helps other people.