HELP
First, with the technique open in the upper right corner, click Launcher Options> Java Options> Memory and place it at least 2 GB. Try to start modpack again after that
If that doesn't help reinstall this modpack
Installing a modpack using the Technic Launcher is easy. If you don't already have the launcher downloaded, visit our download page to get the latest version.
Type in the modpack name (Ice And Fire - 1.12.2) or paste the following url into the search box.
Finally, click Install at the bottom right of the launcher after you select Ice And Fire - 1.12.2 from the list on the left. The launcher will handle everything else!
HELP
First, with the technique open in the upper right corner, click Launcher Options> Java Options> Memory and place it at least 2 GB. Try to start modpack again after that
If that doesn't help reinstall this modpack