My Technic won't open up any modpacks

[Tashati]

Hey there I came to the forums looking for answers and none of them really helped so the issue that i am having is whenever I press play on a Modpack it tries and loads it and then it doesn't launch minecraft bringing me right back to the technic launcher.
Logs: https://pastebin.com/z7jRZkKm

[JaariAtmc]

[B#402] 2019/02/18 10:49:09 [INFO]  Error occurred during initialization of VM

[B#402] 2019/02/18 10:49:09 [INFO]  Could not reserve enough space for object heap

Translation: You can't allocate 3.5 GB if you don't have it available.