execv error: Exec format error The command could not be found

[coffseducation]

Hey all! I am trying to build Cantata. I have not done an appimage before.
The appimage will not launch though!

I get execv error:
"Exec format error " in terminal
"The command could not be found." in Dolphin.

AppRun opens Cantata if I drag it to the terminal - but not if I double click. The desktop file opens Cantata - but the appimage will not launch.

#!/bin/bash

SELF=$(readlink -f "$0")
HERE=${SELF%/*}
EXEC="${HERE}/usr/bin/cantata"
exec "${EXEC}"

Could it be a path issue?

Files here is anyone could help: https://nextcloud.barkingbandicoot.com/index.php/s/x7WZTRJiz9mZaHL

appimagetool 13

Operating System: Kubuntu 23.04
KDE Plasma Version: 5.27.4
KDE Frameworks Version: 5.104.0
Qt Version: 5.15.8
Kernel Version: 6.2.0-1003-lowlatency (64-bit)
Graphics Platform: X11
Processors: 8 × Intel® Core™ i7-6700 CPU @ 3.40GHz
Memory: 31.2 GiB of RAM
Graphics Processor: Mesa Intel® HD Graphics 530
Manufacturer: Dell Inc.
Product Name: Precision 5720 AIO

[FwarkTheYeti]

same issue with sonixd 0.15.5 on kubuntu 23.04 - was working a month ago with the exact same appimage file. However, now it won't run, same errors in terminal/dolphin

https://github.com/jeffvli/sonixd/releases

Sonixd-0.15.5-linux-x86_64.AppImage

Operating System: Kubuntu 23.04
KDE Plasma Version: 5.27.4
KDE Frameworks Version: 5.104.0
Qt Version: 5.15.8
Kernel Version: 6.2.0-20 Generic
Graphics Platform: Wayland
Processors: AMD Ryzen 9 7950X
Memory: 64 GiB of RAM
Graphics Processor: AMD ATI Radeon RX 7900 XT