Unlike deafeyejedi´s reports I managed to export a dng file after conversion from CR2 to MLV with Ilia3101 raw2mlv conversion tool just fine.
WoW. I am puzzled. What were your settings from export within MLV_App to get this valid DNG file to work in Adobe?
Though I dig that Dual-ISO shot of your sexy cat!

BTW, while I am golden on the MBP 13" running MoJave, I am still having issues getting MLV_App_Compiler to work on Catalina via MBP 15”.
Please enter your selection number below and press enter:
U
Updating!
xcode-select: error: command line tools are already installed, use "Software Update" to install updates
curl: (35) LibreSSL SSL_connect: SSL_ERROR_SYSCALL in connection to raw.githubusercontent.com:443
Warning: qt 5.13.1 is already installed and up-to-date
To reinstall 5.13.1, run `brew reinstall qt`
Error: qt5 5.13.1 already installed
fatal: not a git repository (or any of the parent directories): .git
EDIT:
I just randomly decided to delete the MLV_App_Compiler and redownload again from the direct link on OP.
Now it's acting normal with the new updates showing but then I still have this one line of unable to access error on top...

DeafEyeJedi@Apples-Macintosh-10 ~ % /Users/appleuser/Desktop/Mlv_App_compiler.app/Contents/main.command ; exit;
updating MLV-App-master source
fatal: unable to access 'https://github.com/ilia3101/MLV-App.git/': LibreSSL SSL_connect: SSL_ERROR_SYSCALL in connection to github.com:443
Just tried to run 'OP' (same results w ‘U’) and it just skips through with the same error lines of codes below:
Would you like to also add updated focus pixels maps(eosm/100D)? Internet connection needed!
(Y/N)?
y
let´s clean repo first(make clean)!
/Users/appleuser/Desktop/Mlv_App_compiler.app/Contents/main.command: line 276: cd: /Users/appleuser/MLV-App-master/platform/qt/: No such file or directory
make: *** No rule to make target `clean'. Stop.
/Users/appleuser/Desktop/Mlv_App_compiler.app/Contents/main.command: line 278: cd: /Users/appleuser/MLV-App-master/platform/cocoa/: No such file or directory
make: *** No rule to make target `clean'. Stop.
Cannot find file: /Users/appleuser/MLV-App-master/platform/qt/MLVApp.pro.
I'm probably bugging you guys to the point where it may seem like a bit irrational on my part. I apologize if that's the case here.
But should I be fiddling around w the source code on my end to fix this within Line 276 & 278 accordingly?