Custom Modpack Not Working

[Omeruin]

I wasn't going to have this modpack on Technic, but, I want to play with all the chosen mods on there just in case my friends want to join me at anytime.

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I've uploaded a different modpack before, personal like this one, and it worked out just fine. This one does have wayyy more mods so something different is definitely going on. Downloading the modpack is fine, it is hosted on Dropbox. However, when I try to 'play' the modpack, it loads a few things before Minecraft assets, then waits a bit, the Launcher disappears, and then the launcher reappears; meaning something crashed/is not loading right.

Here is the crash log from Technic: { https://pastebin.com/rz39VrR3 }

Any help would be appreciated. I tried to skim through the log myself, but it is definitely confusing for me.

Sorry if this is in the wrong topic, or that something isn't right, I'm typing as fast as I can before I go to work (I'll be able to respond within 8-9 hours from now).