Serviio does not work

The service ends shortly after the start. The log shows the following error:
The path for ffmeg contains 2 consecutive backslashs. Is this correct?
ffmpeg is in place and seems to be ok for me:
What can I do to make the software work?
My environment:
Windows 10 version 1803
Serviio 1.9.2
2018-07-18 22:36:48,059 INFO [ProfileManager] User profiles definition (user-profiles.xml) not found, using built-in profiles only
2018-07-18 22:36:48,090 INFO [PluginCompilerThread] Looking for plugins at C:\Program Files\Serviio\bin\..\plugins
2018-07-18 22:36:48,090 INFO [PluginCompilerThread] Started looking for plugins
2018-07-18 22:36:48,090 INFO [UpdateChecker] Checking if a new version is available
2018-07-18 22:36:48,090 DEBUG [FFMPEGWrapper] Invoking FFMPEG to check if it exists of path C:\Program Files\Serviio\bin\\..\lib\ffmpeg.exe
2018-07-18 22:36:48,106 DEBUG [ProcessExecutor] Starting C:\Program Files\Serviio\bin\\..\lib\ffmpeg.exe
2018-07-18 22:36:48,137 ERROR [MediaServer] An unexpected error occured. Ending the application. Message: FFMPEG not found. Serviio will not work properly.
java.lang.ExceptionInInitializerError
at org.serviio.MediaServer.main(MediaServer.java:144)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at com.exe4j.runtime.LauncherEngine.launch(LauncherEngine.java:62)
at com.exe4j.runtime.WinLauncher$2.run(WinLauncher.java:96)
Caused by: java.lang.RuntimeException: FFMPEG not found. Serviio will not work properly.
at org.serviio.external.FFMPEGWrapper.loadFFmpegInfo(FFMPEGWrapper.java:138)
at org.serviio.external.FFMPEGWrapper.<clinit>(FFMPEGWrapper.java:111)
... 7 more
2018-07-18 22:36:48,137 WARN [IndexedDiskCache] Region [subtitles_metadata] Disk cache not shutdown properly, shutting down now.
2018-07-18 22:36:48,137 WARN [IndexedDiskCache] Region [thumbnails] Disk cache not shutdown properly, shutting down now.
2018-07-18 22:36:48,137 WARN [IndexedDiskCache] Region [online_technical_metadata] Disk cache not shutdown properly, shutting down now.
2018-07-18 22:36:48,137 WARN [IndexedDiskCache] Region [subtitles] Disk cache not shutdown properly, shutting down now.
The path for ffmeg contains 2 consecutive backslashs. Is this correct?
ffmpeg is in place and seems to be ok for me:
PS C:\Program Files\Serviio\lib> .\ffmpeg.exe
ffmpeg version 3.2.4 Copyright (c) 2000-2017 the FFmpeg developers
built with gcc 4.9.3 (GCC)
configuration: --enable-static --disable-shared --disable-ffplay --disable-ffserver --enable-memalign-hack --enable-libmp3lame --enable-libass --enable-librtmp --enable-fontconfig --enable-libfreetype --enable-zlib --enable-libx264 --enable-libspeex --extra-libs='-lrtmp -lpolarssl -lws2_32 -lwinmm -lexpat -lfreetype -lfribidi -lz' --arch=x86 --enable-runtime-cpudetect --enable-pthreads --target-os=mingw32 --cross-prefix=i686-w64-mingw32- --enable-gpl --pkg-config=pkg-config --bindir='/jenkins/workspace/FFmpeg - Win32/target'
libavutil 55. 34.101 / 55. 34.101
libavcodec 57. 64.101 / 57. 64.101
libavformat 57. 56.101 / 57. 56.101
libavdevice 57. 1.100 / 57. 1.100
libavfilter 6. 65.100 / 6. 65.100
libswscale 4. 2.100 / 4. 2.100
libswresample 2. 3.100 / 2. 3.100
libpostproc 54. 1.100 / 54. 1.100
Hyper fast Audio and Video encoder
usage: ffmpeg [options] [[infile options] -i infile]... {[outfile options] outfile}...
Use -h to get full help or, even better, run 'man ffmpeg'
What can I do to make the software work?
My environment:
Windows 10 version 1803
Serviio 1.9.2