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I have an external DVD drive on a mac mini running Mojave. I can't get the movie to play. What can I do? Below is the default log.
Thanks


-- logger module started --
main error: no suitable interface module
main error: interface "(null),none" initialization failed
main: Running vlc with the default interface. Use 'cvlc' to use vlc without interface.
main: playlist is empty
filesystem error: read error: Permission denied
cache_read error: cannot pre fill buffer
mjpeg error: cannot peek
filesystem error: read error: Permission denied
cache_read error: cannot pre fill buffer
mjpeg error: cannot peek
filesystem error: read error: Permission denied
cache_read error: cannot pre fill buffer
mjpeg error: cannot peek
filesystem error: read error: Permission denied
cache_read error: cannot pre fill buffer
mjpeg error: cannot peek
filesystem error: read error: Permission denied
cache_read error: cannot pre fill buffer
mjpeg error: cannot peek
filesystem error: read error: Permission denied
cache_read error: cannot pre fill buffer
mjpeg error: cannot peek
cache_read error: cannot pre fill buffer
mjpeg error: cannot peek
-- logger module stopped --

This is part of the debug log:

-- logger module started --
main debug: VLC media player - 3.0.12 Vetinari
main debug: Copyright © 1996-2020 the VideoLAN team
main debug: revision 3.0.12-1-0-gd147bb5e7e
main debug: configured with /Users/d-fu/vlc-3.0/extras/package/macosx/../../../configure '--prefix=/Users/d-fu/vlc-3.0/build/vlc_install_dir' '--enable-macosx' '--enable-merge-ffmpeg' '--enable-osx-notifications' '--enable-faad' '--enable-flac' '--enable-theora' '--enable-shout' '--enable-ncurses' '--enable-twolame' '--enable-realrtsp' '--enable-libass' '--enable-macosx-avfoundation' '--disable-skins2' '--disable-xcb' '--disable-caca' '--disable-pulse' '--disable-sdl-image' '--disable-vnc' '--build=x86_64-apple-darwin17' '--host=x86_64-apple-darwin17' '--with-macosx-version-min=10.7' '--with-macosx-sdk=/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk' '--with-breakpad=https://mac.crashes.videolan.org' 'build_alias=x86_64-apple-darwin17' 'host_alias=x86_64-apple-darwin17' 'CC=/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang' 'CFLAGS=-g -arch x86_64' 'LDFLAGS=-arch x86_64' 'CXX=/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang++' 'CXXFLAGS=-g -arch x86_64' 'OBJC=/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang' 'OBJCFLAGS=-g -arch x86_64'
main debug: searching plug-in modules
main debug: loading plugins cache file /Applications/VLC.app/Contents/MacOS/plugins/plugins.dat
main debug: recursively browsing `/Applications/VLC.app/Contents/MacOS/plugins'
main debug: plug-ins loaded: 471 modules
main debug: opening config file (/Users/Sean/Library/Preferences/org.videolan.vlc/vlcrc)
main debug: looking for logger module matching "any": 3 candidates
file debug: opening logfile `/Users/Sean/Desktop/log_debug.txt'
main debug: using logger module "file"
main debug: translation test: code is "C"
main debug: looking for keystore module matching "memory": 3 candidates
main debug: using keystore module "memory"
main debug: CPU has capabilities MMX MMXEXT SSE SSE2 SSE3 SSSE3 SSE4.1 SSE4.2 FPU
main warning: Key "Command+0" bound to multiple actions
main debug: Creating an input for 'Media Library'
main debug: selected sub language[0] ru
main debug: Input is a meta file: disabling unneeded options
main debug: using timeshift granularity of 50 MiB
main debug: using default timeshift path
main debug: `file/directory:///Users/Sean/Library/Application%20Support/org.videolan.vlc/ml.xspf' gives access `file' demux `directory' path `/Users/Sean/Library/Application%20Support/org.videolan.vlc/ml.xspf'
main debug: creating demux: access='file' demux='directory' location='/Users/Sean/Library/Application%20Support/org.videolan.vlc/ml.xspf' file='/Users/Sean/Library/Application Support/org.videolan.vlc/ml.xspf'
main debug: looking for access_demux module matching "file": 14 candidates
main debug: no access_demux modules matched
main debug: creating access: file:///Users/Sean/Library/Application%20Support/org.videolan.vlc/ml.xspf
main debug: (path: /Users/Sean/Library/Application Support/org.videolan.vlc/ml.xspf)
main debug: looking for access module matching "file": 24 candidates
main debug: using access module "filesystem"
main debug: looking for stream_filter module matching "prefetch,cache_read": 26 candidates
cache_read debug: Using stream method for AStream*
cache_read debug: starting pre-buffering
cache_read debug: received first data after 0 ms
cache_read debug: pre-buffering done 296 bytes in 0s - 4129 KiB/s
main debug: using stream_filter module "cache_read"
main debug: looking for stream_filter module matching "any": 26 candidates
playlist debug: using XSPF playlist reader
main debug: using stream_filter module "playlist"
main debug: stream filter added to 0x7fbb51f008f0
main debug: looking for stream_filter module matching "any": 26 candidates
main debug: no stream_filter modules matched
main debug: looking for stream_directory module matching "any": 1 candidates
main debug: no stream_directory modules matched
main debug: attachment of directory-extractor failed for file:///Users/Sean/Library/Application%20Support/org.videolan.vlc/ml.xspf
main debug: looking for stream_filter module matching "record": 26 candidates
main debug: using stream_filter module "record"
main debug: creating demux: access='file' demux='directory' location='/Users/Sean/Library/Application%20Support/org.videolan.vlc/ml.xspf' file='/Users/Sean/Library/Application Support/org.videolan.vlc/ml.xspf'
main debug: looking

You need to give VLC permission to access the external drive. This seems to be prohibited by the OS.