Error when running the record demo

Hi,
I’m running the mediasoup record demo using ffmpeg I’m getting this error.

Run command: D:\mediasoup-Recording\node_modules\ffmpeg-static\ffmpeg.exe -nostdin -protocol_whitelist file,rtp,udp -fflags +genpts -i D:\mediasoup-Recording/recording/input-vp8.sdp -map 0:a:0 -c:a copy -map 0:v:0 -c:v copy -f webm -flags +global_header -y D:\mediasoup-Recording/recording/output-ffmpeg-vp8.webm
ffmpeg version 4.3 Copyright © 2000-2020 the FFmpeg developers
built with gcc 9.3.1 (GCC) 20200621
configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-fontconfig --enable-gnutls --enable-iconv --enable-libass --enable-libdav1d --enable-libbluray --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libsrt --enable-libtheora --enable-libtwolame --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libzimg --enable-lzma --enable-zlib --enable-gmp --enable-libvidstab --enable-libvmaf --enable-libvorbis --enable-libvo-amrwbenc --enable-libmysofa --enable-libspeex --enable-libxvid --enable-libaom --enable-libgsm --disable-w32threads --enable-libmfx --enable-ffnvcodec --enable-cuda-llvm --enable-cuvid --enable-d3d11va --enable-nvenc --enable-nvdec --enable-dxva2 --enable-avisynth --enable-libopenmpt --enable-amf
libavutil 56. 51.100 / 56. 51.100
libavcodec 58. 91.100 / 58. 91.100
libavformat 58. 45.100 / 58. 45.100
libavdevice 58. 10.100 / 58. 10.100
libavfilter 7. 85.100 / 7. 85.100
libswscale 5. 7.100 / 5. 7.100
libswresample 3. 7.100 / 3. 7.100
libpostproc 55. 7.100 / 55. 7.100
[udp @ 000000dff5cc27c0] bind failed: Error number -10048 occurred
D:\mediasoup-Recording/recording/input-vp8.sdp: Invalid data found when processing input
Recording process exit, code: 1, signal: null
Stop mediasoup RTP transport and consumer
Recording stopped
Resume mediasoup RTP consumer, kind: audio, type: simple
Resume mediasoup RTP consumer, kind: video, type: simulcast
(node:9404) UnhandledPromiseRejectionWarning: Error: Transport not found
at Channel._processMessage (D:\mediasoup-Recording\node_modules\mediasoup\lib\Channel.js:199:37)
at Socket. (D:\mediasoup-Recording\node_modules\mediasoup\lib\Channel.js:61:34)
at Socket.emit (events.js:315:20)
at addChunk (_stream_readable.js:295:12)
at readableAddChunk (_stream_readable.js:271:9)
at Socket.Readable.push (_stream_readable.js:212:10)
at Pipe.onStreamRead (internal/stream_base_commons.js:186:23)
(node:9404) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). To terminate the node process on unhandled promise rejection, use the CLI flag --unhandled-rejections=strict (see https://nodejs.org/api/cli.html#cli_unhandled_rejections_mode). (rejection id: 1)
(node:9404) [DEP0018] DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code.
(node:9404) UnhandledPromiseRejectionWarning: Error: Transport not found
at Channel._processMessage (D:\mediasoup-Recording\node_modules\mediasoup\lib\Channel.js:199:37)
at Socket. (D:\mediasoup-Recording\node_modules\mediasoup\lib\Channel.js:61:34)
at Socket.emit (events.js:315:20)
at addChunk (_stream_readable.js:295:12)
at readableAddChunk (_stream_readable.js:271:9)
at Socket.Readable.push (_stream_readable.js:212:10)
at Pipe.onStreamRead (internal/stream_base_commons.js:186:23)
(node:9404) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). To terminate the node process on unhandled promise rejection, use the CLI flag --unhandled-rejections=strict (see https://nodejs.org/api/cli.html#cli_unhandled_rejections_mode). (rejection id: 2)