omega adventure pack Can't play the modpack (installation once launched doesn't work)

[Sicarius]

Hello,

I don’t know how to qualify this bug because it is after I launch the mod but before I can even play

I installed for the first time the Technic Launcher to play Omega Adventure Modspack yesterday.
My problem is when I click on play I can see in the Windows Menu Task Bar « Java 1.7.10 » with the Minecraft logo, but nothing appears on my screen, even after 10 hours (launch it, when to sleep, it was still in the same state.).
My words may not be clear, so just in case there is a link to a gif showing my problem (the rules forbid to use a link to another website for screenshot but not for gif, but if it is againts the rules I’ll delete it as soon as I learn it) :

https://gyazo.com/2e09f819b40cfca84ffd85ade6f040ba

I tried to uninstall and reinstall the mod pack and the Launcher, I restarted my pc, and  I modified the settings to allow the use of 16 Gb of Ram (I have 32), I checked I had the last java version in 64 Bits (I do), nothing worked.

The reproduction rate is 10/10, it happens everytime.

The expected result : the final installation of the modpack in a Minecraft window (as you can see in tutorial video about the installation of the Omega Adventure Modpack on youtube).

The observed result : nothing happens expect what you can see on the screenshot

Logs : http://paste.ubuntu.com/p/KGHwyKkcfD/plain/

Versions of modpack, java, os :

-modpack : 3.34

-Java : 1.8.0_251 64-Bit

-OS : windows 10 pro version 1903 in 64 Bits, cpu x64

Severity : High, I can not play at all

Edited May 2, 2020 by Sicarius

[Sicarius]

I finally found how to fix, the last java version doesn't work, I had to downgrade to an other version