Crash Log

[08:55:27] [main/INFO] [GradleStart]: No arguments specified, assuming client.
[08:55:27] [main/INFO] [GradleStart]: Extra: []
Exception in thread "main" java.lang.RuntimeException: java.io.FileNotFoundException: C:\Users\user\.gradle\caches\minecraft\assets\indexes\{ASSET_INDEX}.json (The system cannot find the file specified)
    at com.google.common.base.Throwables.propagate(Throwables.java:160)
    at GradleStart.setupAssets(GradleStart.java:260)
    at GradleStart.startClient(GradleStart.java:82)
    at GradleStart.main(GradleStart.java:56)
Caused by: java.io.FileNotFoundException: C:\Users\user\.gradle\caches\minecraft\assets\indexes\{ASSET_INDEX}.json (The system cannot find the file specified)
    at java.io.FileInputStream.open(Native Method)
    at java.io.FileInputStream.<init>(Unknown Source)
    at java.io.FileReader.<init>(Unknown Source)
    at GradleStart.loadAssetsIndex(GradleStart.java:266)
    at GradleStart.setupAssets(GradleStart.java:204)
    ... 2 more