This is the terminal output:
sabnzbdplus -b1 -l2
2021-07-25 20:46:52,371::INFO::[sabnzbdplus:1179] --------------------------------
2021-07-25 20:46:52,410::INFO::[sabnzbdplus:1180] sabnzbdplus-3.4.0Beta1
2021-07-25 20:46:52,411::INFO::[sabnzbdplus:1190] Commit = 92b023599bad0d0b68d72e7cf46ab18178190d7e
2021-07-25 20:46:52,411::INFO::[sabnzbdplus:1192] Full executable path = /usr/bin/sabnzbdplus
2021-07-25 20:46:52,411::INFO::[sabnzbdplus:1193] Arguments = "/usr/bin/sabnzbdplus" "-b1" "-l2"
2021-07-25 20:46:52,411::INFO::[sabnzbdplus:1194] Python-version = 3.8.10 (default, Jun 2 2021, 10:49:15)
[GCC 9.4.0]
2021-07-25 20:46:52,412::INFO::[sabnzbdplus:1195] Dockerized = False
2021-07-25 20:46:52,412::INFO::[sabnzbdplus:1196] CPU architecture = x86_64
2021-07-25 20:46:52,483::INFO::[sabnzbdplus:1199] Platform = posix - Linux-5.8.0-63-generic-x86_64-with-glibc2.29
2021-07-25 20:46:52,483::INFO::[sabnzbdplus:1205] Preferred encoding = UTF-8
2021-07-25 20:46:52,483::INFO::[sabnzbdplus:1217] SSL version = OpenSSL 1.1.1f 31 Mar 2020
2021-07-25 20:46:52,517::INFO::[sabnzbdplus:1226] Certifi version = 2019.11.28
2021-07-25 20:46:52,517::INFO::[sabnzbdplus:1227] Loaded additional certificates from /etc/ssl/certs/ca-certificates.crt
2021-07-25 20:46:52,734::DEBUG::[sabnzbdplus:1236] Available certificates = {'x509': 129, 'crl': 0, 'x509_ca': 129}
2021-07-25 20:46:52,735::DEBUG::[sabnzbdplus:1239] Local IPv4 address = 10.106.86.235
2021-07-25 20:46:53,143::DEBUG::[sabnzbdplus:1240] Public IPv4 address = 185.65.134.233
2021-07-25 20:46:53,144::DEBUG::[sabnzbdplus:1241] IPv6 address = None
2021-07-25 20:46:53,406::DEBUG::[sabnzbdplus:1244] CPU Pystone available performance = 69597
2021-07-25 20:46:53,424::DEBUG::[sabnzbdplus:1245] CPU model = Intel(R) Core(TM)2 Duo CPU T6400 @ 2.00GHz
2021-07-25 20:46:53,424::INFO::[sabnzbdplus:1247] Using INI file /home/onno/.sabnzbd/sabnzbd.ini
2021-07-25 20:46:53,424::DEBUG::[filesystem:584] Applying permissions 0o775 (octal) to /home/onno/Downloads/incomplete
2021-07-25 20:46:53,721::DEBUG::[__init__:968] [sabnzbd.bpsmeter.read] Loading data for totals10.sab
2021-07-25 20:46:53,721::INFO::[__init__:923] [sabnzbd.load_admin] /home/onno/.sabnzbd/admin/totals10.sab missing
2021-07-25 20:46:53,722::DEBUG::[bpsmeter:186] Setting default BPS meter values
2021-07-25 20:46:54,067::DEBUG::[downloader:258] Initializing downloader
2021-07-25 20:46:54,068::DEBUG::[downloader:445] Sleep time: 0.001000 seconds
2021-07-25 20:46:54,068::DEBUG::[decoder:65] Initializing decoders
2021-07-25 20:46:54,068::DEBUG::[decoder:113] Initializing decoder Thread-6
2021-07-25 20:46:54,068::DEBUG::[decoder:113] Initializing decoder Thread-7
2021-07-25 20:46:54,069::DEBUG::[decoder:113] Initializing decoder Thread-8
2021-07-25 20:46:54,069::INFO::[postproc:135] Loading postproc queue
2021-07-25 20:46:54,069::DEBUG::[__init__:968] [sabnzbd.postproc.load] Loading data for postproc2.sab
2021-07-25 20:46:54,069::INFO::[__init__:923] [sabnzbd.load_admin] /home/onno/.sabnzbd/admin/postproc2.sab missing
2021-07-25 20:46:54,070::DEBUG::[__init__:968] [sabnzbd.dirscanner.__init__] Loading data for watched_data2.sab
2021-07-25 20:46:54,070::INFO::[__init__:923] [sabnzbd.load_admin] /home/onno/.sabnzbd/admin/watched_data2.sab missing
2021-07-25 20:46:54,070::DEBUG::[__init__:968] [sabnzbd.rating.__init__] Loading data for Rating.sab
2021-07-25 20:46:54,071::INFO::[__init__:923] [sabnzbd.load_admin] /home/onno/.sabnzbd/admin/Rating.sab missing
2021-07-25 20:46:54,071::DEBUG::[__init__:968] [sabnzbd.rss.__init__] Loading data for rss_data.sab
2021-07-25 20:46:54,071::INFO::[__init__:923] [sabnzbd.load_admin] /home/onno/.sabnzbd/admin/rss_data.sab missing
2021-07-25 20:46:54,072::INFO::[scheduler:190] Scheduling RSS interval task every 60 min (delay=55)
2021-07-25 20:46:54,072::INFO::[scheduler:206] Setting schedule for midnight BPS reset
2021-07-25 20:46:54,072::INFO::[scheduler:209] Setting schedule for server expiration check
2021-07-25 20:46:54,072::INFO::[scheduler:214] Setting scheduler for server quota check
2021-07-25 20:46:54,073::DEBUG::[__init__:968] [sabnzbd.nzbqueue.read_queue] Loading data for queue10.sab
2021-07-25 20:46:54,073::DEBUG::[__init__:927] [sabnzbd.load_admin] Loading data for queue10.sab from /home/onno/.sabnzbd/admin/queue10.sab
2021-07-25 20:46:54,129::DEBUG::[__init__:927] [sabnzbd.nzbqueue.read_queue] Loading data for SABnzbd_nzo_bz_adja4 from /home/onno/Downloads/incomplete/Nederlandse Tijdschriften 22-07-2021.1/__ADMIN__/SABnzbd_nzo_bz_adja4
2021-07-25 20:46:54,167::DEBUG::[__init__:593] PAUSED_ALL inactive
2021-07-25 20:46:54,170::INFO::[config:905] Writing settings to INI file /home/onno/.sabnzbd/sabnzbd.ini
2021-07-25 20:46:54,174::INFO::[__init__:334] All processes started
2021-07-25 20:46:54,322::INFO::[sabnzbdplus:343] Template location for Glitter is /usr/share/sabnzbdplus/interfaces/Glitter
2021-07-25 20:46:54,364::INFO::[sabnzbdplus:343] Template location for Config is /usr/share/sabnzbdplus/interfaces/Config
2021-07-25 20:46:56,640::DEBUG::[sabtraylinux:33] XApp found: <XAppProxyModule <IntrospectionModule 'XApp' from '/usr/lib/x86_64-linux-gnu/girepository-1.0/XApp-1.0.typelib'>>
2021-07-25 20:46:56,643::INFO::[misc:1090] [sabnzbd.misc.run_command] Running external command: ['/usr/bin/unrar']
2021-07-25 20:46:56,645::DEBUG::[misc:1091] Popen arguments: {'stdin': -1, 'stdout': -1, 'stderr': -2, 'startupinfo': None, 'creationflags': 0}
2021-07-25 20:46:56,807::INFO::[misc:1090] [sabnzbd.misc.run_command] Running external command: ['/usr/bin/par2', '-h']
2021-07-25 20:46:56,807::DEBUG::[misc:1091] Popen arguments: {'stdin': -1, 'stdout': -1, 'stderr': -2, 'startupinfo': None, 'creationflags': 0}
2021-07-25 20:46:57,055::INFO::[sabnzbdplus:430] SABYenc module (v4.0.1)... found!
2021-07-25 20:46:57,055::INFO::[sabnzbdplus:449] Cryptography module (v2.
... found!
2021-07-25 20:46:57,056::INFO::[sabnzbdplus:454] par2 binary... found (/usr/bin/par2)
2021-07-25 20:46:57,056::INFO::[sabnzbdplus:461] UNRAR binary... found (/usr/bin/unrar)
2021-07-25 20:46:57,056::INFO::[sabnzbdplus:471] UNRAR binary version 5.61
2021-07-25 20:46:57,056::INFO::[sabnzbdplus:479] 7za binary... found (/usr/bin/7za)
2021-07-25 20:46:57,056::INFO::[sabnzbdplus:490] nice binary... found (/usr/bin/nice)
2021-07-25 20:46:57,056::INFO::[sabnzbdplus:494] ionice binary... found (/usr/bin/ionice)
2021-07-25 20:46:57,058::INFO::[sabnzbdplus:1436] Starting web-interface on 127.0.0.1:8080
2021-07-25 20:46:57,059::INFO::[_cplogging:219] [25/Jul/2021:20:46:57] ENGINE Bus STARTING
2021-07-25 20:46:57,085::INFO::[_cplogging:219] [25/Jul/2021:20:46:57] ENGINE Started monitor thread '_TimeoutMonitor'.
2021-07-25 20:46:57,434::INFO::[_cplogging:219] [25/Jul/2021:20:46:57] ENGINE Serving on
http://127.0.0.1:8080
2021-07-25 20:46:57,435::INFO::[_cplogging:219] [25/Jul/2021:20:46:57] ENGINE Bus STARTED
2021-07-25 20:46:57,435::INFO::[sabnzbdplus:1473] Starting sabnzbdplus-3.4.0Beta1
2021-07-25 20:46:57,435::DEBUG::[__init__:342] Starting postprocessor
2021-07-25 20:46:57,436::INFO::[postproc:233] Completed Download Folder /home/onno/Downloads/complete is not on FAT
2021-07-25 20:46:57,436::DEBUG::[__init__:345] Starting assembler
2021-07-25 20:46:57,437::DEBUG::[__init__:348] Starting downloader
2021-07-25 20:46:57,437::DEBUG::[__init__:351] Starting decoders
2021-07-25 20:46:57,440::DEBUG::[__init__:354] Starting scheduler
2021-07-25 20:46:57,443::DEBUG::[__init__:357] Starting dirscanner
2021-07-25 20:46:57,443::INFO::[dirscanner:117] Dirscanner starting up
2021-07-25 20:46:57,444::DEBUG::[__init__:360] Starting rating
2021-07-25 20:46:57,445::DEBUG::[__init__:1108] Test IPv6: Cannot reach IPv6 test host. Disabling IPv6
2021-07-25 20:46:57,446::DEBUG::[__init__:363] Starting urlgrabber
2021-07-25 20:46:57,446::DEBUG::[downloader:532] External IPv6 test result: False
2021-07-25 20:46:57,447::INFO::[panic:239] Launching browser with
http://127.0.0.1:8080/sabnzbd
2021-07-25 20:46:57,653::DEBUG::[downloader:536] SSL verification test: True
2021-07-25 20:47:03,036::INFO::[notifier:122] Sending notification: SABnzbd - SABnzbd 3.4.0Beta1 is gestart (type=startup, job_cat=None)
2021-07-25 20:47:03,038::INFO::[notifier:182] Send to NotifyOSD: SABnzbd / SABnzbd 3.4.0Beta1 is gestart
2021-07-25 20:47:03,636::DEBUG::[misc:376] Version check disabled by Debian/Ubuntu packaging
(sabnzbdplus:3306): Gdk-ERROR **: 20:47:03.941: The program 'sabnzbdplus' received an X Window System error.
This probably reflects a bug in the program.
The error was 'BadWindow (invalid Window parameter)'.
(Details: serial 833 error_code 3 request_code 18 (core protocol) minor_code 0)
(Note to programmers: normally, X errors are reported asynchronously;
that is, you will receive the error a while after causing it.
To debug your program, run it with the GDK_SYNCHRONIZE environment
variable to change this behavior. You can then get a meaningful
backtrace from your debugger if you break on the gdk_x_error() function.)
Traceer/breekpunt-instructie (geheugendump gemaakt)