Please, try harder to google. This was from the second result.I have googled it. I haven't found anything. Please help because I want to get back to coding but I cant test to see if it works.
PS: This happened right after I tried uploading to Github.
Second Result From Google said:Open up your 'Run Configurations'; the old main class should was "net.minecraft.launchwrapper.Launch" - change this to "GradleStart", which you may need to use the 'Search' button next to the input box to make sure your system can actually find it.
Next, in the "Arguments" tab, remove ALL 'Program Arguments' - it should be totally blank, though you can add in your username if you want.
VM Arguments stay the same: "-Dfml.ignoreInvalidMinecraftCertificates=true"
Finally, make sure you have the new 1.7.10 assets stuff in your .gradle/caches/minecraft/assets folder; there should be an 'indexes' and 'objects' folder with a 1.7.10.json and legacy.json file in the 'indexes' folder and a ton of alphabet folders in the 'objects' folder - you can find these assets in your Minecraft directory if needed.