Crash when adding a zip file containing multiple audio files to the queue

When adding a zip file containing a single audio file it works fine:

volumio[14526]: info: CoreCommandRouter::volumioPushQueue
volumio[14526]: info: CoreStateMachine::addQueueItems
volumio[14526]: info: CorePlayQueue::addQueueItems
volumio[14526]: info: Adding Item to queue: music-library/USB/1TB/flac/test_zip/chords.zip
volumio[14526]: info: Exploding uri music-library/USB/1TB/flac/test_zip/chords.zip in service mpd
volumio[14526]: info: ALBUMART /albumart?cacheid=217&web=//extralarge&path=%2Fmnt%2FUSB%2F1TB%2Fflac%2Ftest_zip%2Fchords.zip&metadata=false
volumio[14526]: info: URI /mnt/USB/1TB/flac/test_zip/chords.zip
volumio[14526]: info: CorePlayQueue::saveQueue

When adding a zip file containing more than one audio file it crashes:

volumio[14526]: info: CoreCommandRouter::volumioPushQueue
volumio[14526]: info: CoreStateMachine::addQueueItems
volumio[14526]: info: CorePlayQueue::addQueueItems
volumio[14526]: info: Adding Item to queue: music-library/USB/1TB/flac/test_zip/chords.zip
volumio[14526]: info: Exploding uri music-library/USB/1TB/flac/test_zip/chords.zip in service mpd
volumio[14526]: info: ALBUMART /albumart?cacheid=217&web=//extralarge&path=%2Fmnt%2FUSB%2F1TB%2Fflac%2Ftest_zip%2Fchords.zip&metadata=false
volumio[14526]: info: URI /mnt/USB/1TB/flac/test_zip/chords.zip
volumio[14526]: info: ALBUMART /albumart?cacheid=217&web=//extralarge&path=%2Fmnt%2FUSB%2F1TB%2Fflac%2Ftest_zip%2Fchords.zip&metadata=false
volumio[14526]: info: URI /mnt/USB/1TB/flac/test_zip/chords.zip
volumio[14526]: |||||||||||||||||||||||| WARNING: FATAL ERROR |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
volumio[14526]: Error: Unable to resolve or reject the same promise twice
volumio[14526]: at Promise.resolve (/volumio/node_modules/kew/kew.js:140:43)
volumio[14526]: at /volumio/app/plugins/music_service/mpd/index.js:2508:21
volumio[14526]: at MpdClient.handleMessage (/volumio/app/plugins/music_service/mpd/lib/mpd.js:77:3)
volumio[14526]: at MpdClient.receive (/volumio/app/plugins/music_service/mpd/lib/mpd.js:68:12)
volumio[14526]: at Socket.<anonymous> (/volumio/app/plugins/music_service/mpd/lib/mpd.js:43:12)
volumio[14526]: at emitOne (events.js:116:13)
volumio[14526]: at Socket.emit (events.js:211:7)
volumio[14526]: at addChunk (_stream_readable.js:263:12)
volumio[14526]: at readableAddChunk (_stream_readable.js:246:13)
volumio[14526]: at Socket.Readable.push (_stream_readable.js:208:10)
volumio[14526]: at Pipe.onread (net.js:607:20)
volumio[14526]: |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
sudo[15778]: volumio : TTY=unknown ; PWD=/ ; USER=root ; COMMAND=/bin/journalctl --since=2020-11-14 16:16
sudo[15778]: pam_unix(sudo:session): session opened for user root by (uid=0)
sudo[15778]: pam_unix(sudo:session): session closed for user root
volumio-remote-updater[624]: [2020-11-14 16:17:11] [error] handle_read_frame error: websocketpp.transport:7 (End of File)
volumio-remote-updater[624]: [2020-11-14 16:17:11] [disconnect] Disconnect close local:[1006,End of File] remote:[1006]
systemd[1]: volumio.service: main process exited, code=exited, status=1/FAILURE
systemd[1]: Unit volumio.service entered failed state.
systemd[1]: Starting dynamicswap service...
systemd[1]: Started dynamicswap service.
systemd[1]: volumio.service holdoff time over, scheduling restart.

I noticed it because I have some albums that I bought as flacs which also contain zipped mp3 version in the album directory.

Volumio Information

PRETTY_NAME="Raspbian GNU/Linux 8 (jessie)"
NAME="Raspbian GNU/Linux"
VERSION_ID="8"
VERSION="8 (jessie)"
ID=raspbian
ID_LIKE=debian
HOME_URL="http://www.raspbian.org/"
SUPPORT_URL="http://www.raspbian.org/RaspbianForums"
BUG_REPORT_URL="http://www.raspbian.org/RaspbianBugs"
VOLUMIO_BUILD_VERSION="74e4cc9de715c64d553d35948d017f973a622b6d"
VOLUMIO_FE_VERSION="2be6c28eb9de74ec1f9662ca333f7bd51a232c33"
VOLUMIO_BE_VERSION="259a7f2894e1376413ffac331be84e0e9a6173dd"
VOLUMIO_ARCH="arm"
VOLUMIO_VARIANT="volumio"
VOLUMIO_TEST="FALSE"
VOLUMIO_BUILD_DATE="Thu Sep 24 22:42:43 CEST 2020"

VOLUMIO_VERSION="2.834"
VOLUMIO_HARDWARE="pi"
VOLUMIO_HASH="e41ef0f29aa50c1af109d3064a380c69"