No puedo abrir ninguna AppImage en Ubuntu 19.04

No puedo abrir ninguna AppImage en Ubuntu 19.04

Parece que no puedo abrir ninguna AppImages. obtengo el"El fichero o directorio no existe"error que parece extraño.

Los permisos también deberían ser correctos y una AppImage recién descargada tampoco se iniciará. ¿Tienes alguna idea de lo que esto podría causar? ingrese la descripción de la imagen aquí

ingrese la descripción de la imagen aquí

ACTUALIZACIÓN 1:
Lo intenté nuevamente con una imagen de aplicación sugerida en los comentarios, pero lamentablemente no funciona. Esto al menos explica que el problema radica en mi sistema y no en AppImages.

Aquí está el código de la última prueba:

massigest@Laptop-Massi:~/Applications/Leafpad$ ls -l
total 768
-rwxrwxr-x 1 massigest massigest 786432 mei 22 15:28 Leafpad-0.8.17-x86_64.AppImage
massigest@Laptop-Massi:~/Applications/Leafpad$ ./Leafpad-0.8.17-x86_64.AppImage 
bash: ./Leafpad-0.8.17-x86_64.AppImage: No such file or directory

ACTUALIZACIÓN 2:
NOTA: AppImage no se puede ejecutar en ningún directorio. Y la carpeta Aplicaciones es de mi propiedad.

Otras aplicaciones que no son de AppImage se pueden ejecutar en mi carpeta de aplicaciones; agregué un ejemplo de eso a continuación:

massigest@Laptop-Massi:~/Applications/ArduinoIDE$ ls -l arduino
-rwxrwxr-x 1 massigest massigest 882 dec  6 11:24 arduino
massigest@Laptop-Massi:~/Applications/ArduinoIDE$ ./arduino
Picked up JAVA_TOOL_OPTIONS: 

Alguien también solicitó que se tomara nota del resultado de mount, así que véalo a continuación aquí:

massigest@Laptop-Massi:~/Applications$ mount
sysfs on /sys type sysfs (rw,nosuid,nodev,noexec,relatime)
proc on /proc type proc (rw,nosuid,nodev,noexec,relatime)
udev on /dev type devtmpfs (rw,nosuid,relatime,size=8121196k,nr_inodes=2030299,mode=755)
devpts on /dev/pts type devpts (rw,nosuid,noexec,relatime,gid=5,mode=620,ptmxmode=000)
tmpfs on /run type tmpfs (rw,nosuid,noexec,relatime,size=1629296k,mode=755)
/dev/sda2 on / type ext4 (rw,relatime,errors=remount-ro)
securityfs on /sys/kernel/security type securityfs (rw,nosuid,nodev,noexec,relatime)
tmpfs on /dev/shm type tmpfs (rw,nosuid,nodev)
tmpfs on /run/lock type tmpfs (rw,nosuid,nodev,noexec,relatime,size=5120k)
tmpfs on /sys/fs/cgroup type tmpfs (ro,nosuid,nodev,noexec,mode=755)
cgroup2 on /sys/fs/cgroup/unified type cgroup2 (rw,nosuid,nodev,noexec,relatime,nsdelegate)
cgroup on /sys/fs/cgroup/systemd type cgroup (rw,nosuid,nodev,noexec,relatime,xattr,name=systemd)
pstore on /sys/fs/pstore type pstore (rw,nosuid,nodev,noexec,relatime)
efivarfs on /sys/firmware/efi/efivars type efivarfs (rw,nosuid,nodev,noexec,relatime)
bpf on /sys/fs/bpf type bpf (rw,nosuid,nodev,noexec,relatime,mode=700)
cgroup on /sys/fs/cgroup/cpu,cpuacct type cgroup (rw,nosuid,nodev,noexec,relatime,cpu,cpuacct)
cgroup on /sys/fs/cgroup/net_cls,net_prio type cgroup (rw,nosuid,nodev,noexec,relatime,net_cls,net_prio)
cgroup on /sys/fs/cgroup/perf_event type cgroup (rw,nosuid,nodev,noexec,relatime,perf_event)
cgroup on /sys/fs/cgroup/devices type cgroup (rw,nosuid,nodev,noexec,relatime,devices)
cgroup on /sys/fs/cgroup/memory type cgroup (rw,nosuid,nodev,noexec,relatime,memory)
cgroup on /sys/fs/cgroup/cpuset type cgroup (rw,nosuid,nodev,noexec,relatime,cpuset)
cgroup on /sys/fs/cgroup/rdma type cgroup (rw,nosuid,nodev,noexec,relatime,rdma)
cgroup on /sys/fs/cgroup/pids type cgroup (rw,nosuid,nodev,noexec,relatime,pids)
cgroup on /sys/fs/cgroup/blkio type cgroup (rw,nosuid,nodev,noexec,relatime,blkio)
cgroup on /sys/fs/cgroup/freezer type cgroup (rw,nosuid,nodev,noexec,relatime,freezer)
cgroup on /sys/fs/cgroup/hugetlb type cgroup (rw,nosuid,nodev,noexec,relatime,hugetlb)
systemd-1 on /proc/sys/fs/binfmt_misc type autofs (rw,relatime,fd=30,pgrp=1,timeout=0,minproto=5,maxproto=5,direct,pipe_ino=1236)
mqueue on /dev/mqueue type mqueue (rw,relatime)
hugetlbfs on /dev/hugepages type hugetlbfs (rw,relatime,pagesize=2M)
debugfs on /sys/kernel/debug type debugfs (rw,relatime)
binfmt_misc on /proc/sys/fs/binfmt_misc type binfmt_misc (rw,relatime)
configfs on /sys/kernel/config type configfs (rw,relatime)
fusectl on /sys/fs/fuse/connections type fusectl (rw,relatime)
/var/lib/snapd/snaps/gnome-characters_206.snap on /snap/gnome-characters/206 type squashfs (ro,nodev,relatime,x-gdu.hide)
/var/lib/snapd/snaps/gtk-common-themes_1122.snap on /snap/gtk-common-themes/1122 type squashfs (ro,nodev,relatime,x-gdu.hide)
/var/lib/snapd/snaps/discord_91.snap on /snap/discord/91 type squashfs (ro,nodev,relatime,x-gdu.hide)
/var/lib/snapd/snaps/gnome-3-26-1604_82.snap on /snap/gnome-3-26-1604/82 type squashfs (ro,nodev,relatime,x-gdu.hide)
/var/lib/snapd/snaps/gnome-logs_45.snap on /snap/gnome-logs/45 type squashfs (ro,nodev,relatime,x-gdu.hide)
/var/lib/snapd/snaps/docker_384.snap on /snap/docker/384 type squashfs (ro,nodev,relatime,x-gdu.hide)
/var/lib/snapd/snaps/spotify_32.snap on /snap/spotify/32 type squashfs (ro,nodev,relatime,x-gdu.hide)
/var/lib/snapd/snaps/core_6964.snap on /snap/core/6964 type squashfs (ro,nodev,relatime,x-gdu.hide)
/var/lib/snapd/snaps/spotify_34.snap on /snap/spotify/34 type squashfs (ro,nodev,relatime,x-gdu.hide)
/var/lib/snapd/snaps/core18_941.snap on /snap/core18/941 type squashfs (ro,nodev,relatime,x-gdu.hide)
/var/lib/snapd/snaps/mailspring_326.snap on /snap/mailspring/326 type squashfs (ro,nodev,relatime,x-gdu.hide)
/var/lib/snapd/snaps/docker_381.snap on /snap/docker/381 type squashfs (ro,nodev,relatime,x-gdu.hide)
/var/lib/snapd/snaps/gnome-3-26-1604_78.snap on /snap/gnome-3-26-1604/78 type squashfs (ro,nodev,relatime,x-gdu.hide)
/var/lib/snapd/snaps/core_6673.snap on /snap/core/6673 type squashfs (ro,nodev,relatime,x-gdu.hide)
/var/lib/snapd/snaps/core_6818.snap on /snap/core/6818 type squashfs (ro,nodev,relatime,x-gdu.hide)
/var/lib/snapd/snaps/gnome-3-28-1804_40.snap on /snap/gnome-3-28-1804/40 type squashfs (ro,nodev,relatime,x-gdu.hide)
/var/lib/snapd/snaps/chromium-ffmpeg_11.snap on /snap/chromium-ffmpeg/11 type squashfs (ro,nodev,relatime,x-gdu.hide)
/var/lib/snapd/snaps/chromium-ffmpeg_13.snap on /snap/chromium-ffmpeg/13 type squashfs (ro,nodev,relatime,x-gdu.hide)
/var/lib/snapd/snaps/discord_92.snap on /snap/discord/92 type squashfs (ro,nodev,relatime,x-gdu.hide)
/var/lib/snapd/snaps/gnome-characters_254.snap on /snap/gnome-characters/254 type squashfs (ro,nodev,relatime,x-gdu.hide)
/var/lib/snapd/snaps/mailspring_346.snap on /snap/mailspring/346 type squashfs (ro,nodev,relatime,x-gdu.hide)
/var/lib/snapd/snaps/core18_782.snap on /snap/core18/782 type squashfs (ro,nodev,relatime,x-gdu.hide)
/var/lib/snapd/snaps/gnome-logs_57.snap on /snap/gnome-logs/57 type squashfs (ro,nodev,relatime,x-gdu.hide)
/var/lib/snapd/snaps/gnome-characters_258.snap on /snap/gnome-characters/258 type squashfs (ro,nodev,relatime,x-gdu.hide)
/var/lib/snapd/snaps/datagrip_48.snap on /snap/datagrip/48 type squashfs (ro,nodev,relatime,x-gdu.hide)
/var/lib/snapd/snaps/spotify_35.snap on /snap/spotify/35 type squashfs (ro,nodev,relatime,x-gdu.hide)
/var/lib/snapd/snaps/whatsdesk_15.snap on /snap/whatsdesk/15 type squashfs (ro,nodev,relatime,x-gdu.hide)
/var/lib/snapd/snaps/gtk-common-themes_1198.snap on /snap/gtk-common-themes/1198 type squashfs (ro,nodev,relatime,x-gdu.hide)
/var/lib/snapd/snaps/gnome-3-28-1804_31.snap on /snap/gnome-3-28-1804/31 type squashfs (ro,nodev,relatime,x-gdu.hide)
/var/lib/snapd/snaps/code_7.snap on /snap/code/7 type squashfs (ro,nodev,relatime,x-gdu.hide)
/var/lib/snapd/snaps/docker_372.snap on /snap/docker/372 type squashfs (ro,nodev,relatime,x-gdu.hide)
/var/lib/snapd/snaps/gnome-3-26-1604_74.snap on /snap/gnome-3-26-1604/74 type squashfs (ro,nodev,relatime,x-gdu.hide)
/var/lib/snapd/snaps/core18_970.snap on /snap/core18/970 type squashfs (ro,nodev,relatime,x-gdu.hide)
/var/lib/snapd/snaps/gtk-common-themes_818.snap on /snap/gtk-common-themes/818 type squashfs (ro,nodev,relatime,x-gdu.hide)
/var/lib/snapd/snaps/discord_93.snap on /snap/discord/93 type squashfs (ro,nodev,relatime,x-gdu.hide)
/var/lib/snapd/snaps/gnome-3-28-1804_36.snap on /snap/gnome-3-28-1804/36 type squashfs (ro,nodev,relatime,x-gdu.hide)
/var/lib/snapd/snaps/mailspring_338.snap on /snap/mailspring/338 type squashfs (ro,nodev,relatime,x-gdu.hide)
/var/lib/snapd/snaps/gnome-logs_61.snap on /snap/gnome-logs/61 type squashfs (ro,nodev,relatime,x-gdu.hide)
/var/lib/snapd/snaps/whatsdesk_17.snap on /snap/whatsdesk/17 type squashfs (ro,nodev,relatime,x-gdu.hide)
/var/lib/snapd/snaps/vlc_770.snap on /snap/vlc/770 type squashfs (ro,nodev,relatime,x-gdu.hide)
/var/lib/snapd/snaps/chromium-ffmpeg_9.snap on /snap/chromium-ffmpeg/9 type squashfs (ro,nodev,relatime,x-gdu.hide)
/dev/sda1 on /boot/efi type vfat (rw,relatime,fmask=0077,dmask=0077,codepage=437,iocharset=iso8859-1,shortname=mixed,errors=remount-ro)
/dev/sdb2 on /mnt/HardDisk type fuseblk (rw,nosuid,nodev,relatime,user_id=0,group_id=0,allow_other,blksize=4096,x-gvfs-show)
tmpfs on /run/snapd/ns type tmpfs (rw,nosuid,noexec,relatime,size=1629296k,mode=755)
nsfs on /run/snapd/ns/docker.mnt type nsfs (rw)
tmpfs on /run/user/1000 type tmpfs (rw,nosuid,nodev,relatime,size=1629296k,mode=700,uid=1000,gid=1000)
gvfsd-fuse on /run/user/1000/gvfs type fuse.gvfsd-fuse (rw,nosuid,nodev,relatime,user_id=1000,group_id=1000)
/dev/fuse on /run/user/1000/doc type fuse (rw,nosuid,nodev,relatime,user_id=1000,group_id=1000)
nsfs on /run/snapd/ns/mailspring.mnt type nsfs (rw)

ACTUALIZACIÓN 3:

Ejecuté otro comando para verificar si mi carpeta era propiedad de root. No puedo publicar todos los resultados debido al límite de caracteres, pero mostraré los resultados importantes a continuación:

  3018208     48 -rwxrwxr-x   1 root     root        47231 feb 28 12:35 ./Applications/lpass/lastpass-cli/build/Makefile
   524793      8 -rwxrwxr-x   1 root     root         5694 apr  8 10:27 ./Applications/appeditor-master/build/po/fr.gmo

También puedes consultar elpastillapara la salida completa.

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