v2.9.0.9 YouTube: downloaden mislukt, foutmelding

[DM73]

Wil ik onder Linux Mint 19.2 Xfce (gebaseerd op Ubuntu Ubuntu 18.04 LTS (Bionic Beaver)) een Youtube-flimpje downloaden met Gemistdownloader GTK 2.9.0.10 en klik ik op de knop "Start downloaden", crasht dit programma. Draai ik dit programma in de terminal met de commando /usr/bin/gemistdownloader, krijg ik de volgende meldingen:

Code:

ffmpeg version 3.4.6-0ubuntu0.18.04.1 Copyright (c) 2000-2019 the FFmpeg developers
built with gcc 7 (Ubuntu 7.3.0-16ubuntu3)
configuration: --prefix=/usr --extra-version=0ubuntu0.18.04.1 --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --enable-gpl --disable-stripping --enable-avresample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librubberband --enable-librsvg --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-omx --enable-openal --enable-opengl --enable-sdl2 --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libopencv --enable-libx264 --enable-shared
libavutil      55. 78.100 / 55. 78.100
libavcodec    57.107.100 / 57.107.100
libavformat    57. 83.100 / 57. 83.100
libavdevice    57. 10.100 / 57. 10.100
libavfilter    6.107.100 /  6.107.100
libavresample  3.  7.  0 /  3.  7.  0
libswscale      4.  8.100 /  4.  8.100
libswresample  2.  9.100 /  2.  9.100
libpostproc    54.  7.100 / 54.  7.100

Net nadat ik op de knop "Start download" heb geklikt, krijg ik de volgende melding:

Code:

Unhandled Exception:
System.UriFormatException: Invalid URI: The hostname could not be parsed.
  at System.Uri.CreateThis (System.String uri, System.Boolean dontEscape, System.UriKind uriKind) [0x0007b] in <2703bbaa0a6e4686b6033c2dddb1a363>:0
  at System.Uri..ctor (System.String uriString, System.UriKind uriKind) [0x00014] in <2703bbaa0a6e4686b6033c2dddb1a363>:0
  at System.UriBuilder..ctor (System.String uri) [0x0006c] in <2703bbaa0a6e4686b6033c2dddb1a363>:0
  at GemistDownloader.Downloader.Create (System.String PlainURL, GemistDownloader.DownloadDetails ItemDetails, System.String OutputFile, GemistDownloader.Downloader+DownloadType type, GemistDownloader.Controller.Core+VideoType VideoType, System.Boolean OverrideFileName, GemistDownloader.DownloadSettings DownloadSettings) [0x00011] in <4e6f5b78bd5c4c6ab3e3c8a143a08101>:0
  at MainWindow.DownloadButtonClick (System.Object sender, System.EventArgs e) [0x002f0] in <4e6f5b78bd5c4c6ab3e3c8a143a08101>:0
  at System.Runtime.CompilerServices.AsyncMethodBuilderCore+<>c.<ThrowAsync>b__7_1 (System.Object state) [0x00000] in <285579f54af44a2ca048dad6be20e190>:0
  at System.Threading.QueueUserWorkItemCallback.WaitCallback_Context (System.Object state) [0x00007] in <285579f54af44a2ca048dad6be20e190>:0
  at System.Threading.ExecutionContext.RunInternal (System.Threading.ExecutionContext executionContext, System.Threading.ContextCallback callback, System.Object state, System.Boolean preserveSyncCtx) [0x00071] in <285579f54af44a2ca048dad6be20e190>:0
  at System.Threading.ExecutionContext.Run (System.Threading.ExecutionContext executionContext, System.Threading.ContextCallback callback, System.Object state, System.Boolean preserveSyncCtx) [0x00000] in <285579f54af44a2ca048dad6be20e190>:0
  at System.Threading.QueueUserWorkItemCallback.System.Threading.IThreadPoolWorkItem.ExecuteWorkItem () [0x00021] in <285579f54af44a2ca048dad6be20e190>:0
  at System.Threading.ThreadPoolWorkQueue.Dispatch () [0x00074] in <285579f54af44a2ca048dad6be20e190>:0
  at System.Threading._ThreadPoolWaitCallback.PerformWaitCallback () [0x00000] in <285579f54af44a2ca048dad6be20e190>:0
[ERROR] FATAL UNHANDLED EXCEPTION: System.UriFormatException: Invalid URI: The hostname could not be parsed.
  at System.Uri.CreateThis (System.String uri, System.Boolean dontEscape, System.UriKind uriKind) [0x0007b] in <2703bbaa0a6e4686b6033c2dddb1a363>:0
  at System.Uri..ctor (System.String uriString, System.UriKind uriKind) [0x00014] in <2703bbaa0a6e4686b6033c2dddb1a363>:0
  at System.UriBuilder..ctor (System.String uri) [0x0006c] in <2703bbaa0a6e4686b6033c2dddb1a363>:0
  at GemistDownloader.Downloader.Create (System.String PlainURL, GemistDownloader.DownloadDetails ItemDetails, System.String OutputFile, GemistDownloader.Downloader+DownloadType type, GemistDownloader.Controller.Core+VideoType VideoType, System.Boolean OverrideFileName, GemistDownloader.DownloadSettings DownloadSettings) [0x00011] in <4e6f5b78bd5c4c6ab3e3c8a143a08101>:0
  at MainWindow.DownloadButtonClick (System.Object sender, System.EventArgs e) [0x002f0] in <4e6f5b78bd5c4c6ab3e3c8a143a08101>:0
  at System.Runtime.CompilerServices.AsyncMethodBuilderCore+<>c.<ThrowAsync>b__7_1 (System.Object state) [0x00000] in <285579f54af44a2ca048dad6be20e190>:0
  at System.Threading.QueueUserWorkItemCallback.WaitCallback_Context (System.Object state) [0x00007] in <285579f54af44a2ca048dad6be20e190>:0
  at System.Threading.ExecutionContext.RunInternal (System.Threading.ExecutionContext executionContext, System.Threading.ContextCallback callback, System.Object state, System.Boolean preserveSyncCtx) [0x00071] in <285579f54af44a2ca048dad6be20e190>:0
  at System.Threading.ExecutionContext.Run (System.Threading.ExecutionContext executionContext, System.Threading.ContextCallback callback, System.Object state, System.Boolean preserveSyncCtx) [0x00000] in <285579f54af44a2ca048dad6be20e190>:0
  at System.Threading.QueueUserWorkItemCallback.System.Threading.IThreadPoolWorkItem.ExecuteWorkItem () [0x00021] in <285579f54af44a2ca048dad6be20e190>:0
  at System.Threading.ThreadPoolWorkQueue.Dispatch () [0x00074] in <285579f54af44a2ca048dad6be20e190>:0
  at System.Threading._ThreadPoolWaitCallback.PerformWaitCallback () [0x00000] in <285579f54af44a2ca048dad6be20e190>:0

Versie van Mono:

Code:

daw@Mint:/usr/bin $ mono --version
Mono JIT compiler version 6.4.0.198 (tarball Tue Sep 24 01:21:28 UTC 2019)
Copyright (C) 2002-2014 Novell, Inc, Xamarin Inc and Contributors. www.mono-project.com
TLS:          __thread
SIGSEGV:      altstack
Notifications: epoll
Architecture:  amd64
Disabled:      none
Misc:          softdebug
Interpreter:  yes
LLVM:          yes(610)
Suspend:      hybrid
GC:            sgen (concurrent by default)

Waat gaat hier nu mis, waardoor Gemistdownloader crasht bij het downloaden van een Youtube-filmpje? En wat moet ik zelf doen om dit probleem te verhelpen?