When opening Modpack, it just goes back to launcher

[MrGuyX]

 

Everytime I try opening the modpack by pressing 'play' it loads for awhile, but then it returns to the launcher. 

I do not have Technic Solder Installed, because its too complicated even with instructions by the technic team.

pastebin.com/bLw1Z6tG

[disconsented]

You haven't given us enough to go on so run your modpack through https://github.com/disconsented/MPC (check releases for downloads)

[plowmanplow]

Always provide the API URL or a link to your pack details page when requesting custom modpack assistance.

I would normally let this ride since DrDisconsented has linked to an excellent way to proceed. However, the platform profile for "MrGuyX" has no modpacks associated with it. Are you working on your own pack? Have you published it yet?