So I can see Report 15 Preview finished 08:47
20/10/2020 08.47.03:CEST:CmdLogger:log:SCHWERWIEGEND: Songs Report is:C:\Users\izuck\AppData\Roaming\SongKong\Reports\FixSongsReport00015\FixSongsReport00015.html
then you started new run at 12:54
20/10/2020 12.54.03:CEST:FileMapping:configureBaseFolders:WARNUNG: CheckingFolder:E:\naim music\19.10.2020
but nothing happened after 12:54:19
20/10/2020 12.54.19:CEST:StartMatcher:<init>:SCHWERWIEGEND: G50:E:\naim music\19.10.2020\aussortiert\Greta Van Fleet\Anthem of the Peaceful Army:false:false:false:false
then you retried at 20:18 seem to hang again
then retried again at 2:37 but looks like resources were not released so caused this error
22/10/2020 14.37.42:CEST:WARNUNG: com.mchange.v2.resourcepool.BasicResourcePool$ScatteredAcquireTask@289a2e2f -- Acquisition Attempt Failed!!! Clearing pending acquires. While trying to acquire a needed new resource, we failed to succeed more than the maximum number of allowed acquisition attempts (10). Last acquisition attempt exception:
org.h2.jdbc.JdbcSQLNonTransientConnectionException: Datenbank wird wahrscheinlich bereits benutzt: "Locked by another process". Mögliche Lösungen: alle Verbindungen schliessen; Server Modus verwenden
Database may be already in use: "Locked by another process". Possible solutions: close all other connection(s); use the server mode [90020-199]
But other than this error I cannot see any reason why it hung in first place. . Since you are only using Fix Songs to fix data the processing is actually much simpler than the standard Fix Songs which encompasses matching from remote MusicBrainz/Discogs database.
But is E:\NaimMusic local or remote drive?, if it is remote and there was connection that maybe caused the issue, no network issue has been reported in logs but it is possible it has got hidden.
All I can really suggest at this point is use as local drive if possible and/or reboot pc and retry