Update problems

what operating system are you using?: windows
how did you install the modpack?: ArdaCraft Launcher
have you installed Java 8?: yes
when does the problem happen?: during launch

problem:
used the same launcher i used when i was still involved in the project and it needed to update to 1.12.2. but when it updates it puts all the files away as failed. And at the end gives me a pop-up of not being able to update. this never happend in previous updates and i dont really know what is wrong whit my settings or what else it could be

This is the pop-up i got after it failed to download most of the files

java.io.IOException: 1268 file(s) could not be downloaded
at com.skcraft.launcher.install.HttpDownloader.execute(HttpDownloader.java:139)
at com.skcraft.launcher.install.Installer.download(Installer.java:46)
at com.skcraft.launcher.update.Updater.update(Updater.java:178)
at com.skcraft.launcher.update.Updater.call(Updater.java:95)
at com.skcraft.launcher.update.Updater.call(Updater.java:38)
at java.util.concurrent.FutureTask.run(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)

Ps. im a Pc noob so i dont have a fucking clue what this means