The game freezes and crashes while in the loading screen

When I start the game (with mods), it loads all the mods but crashes at the very end and gives me this error:

 Fatal error launching game. Report this to http://bugs.mojang.com please! Fatal error launching game. Report this to http://bugs.mojang.com please!java.io.FileNotFoundException: File 'C:\Users\leola\Twitch\Minecraft\Install\assets\indexes\1.14.json' does not exist at org.apache.commons.io.FileUtils.openInputStream(FileUtils.java:299) ~[launcher.jar:1.6.93] at org.apache.commons.io.FileUtils.readFileToString(FileUtils.java:1711) ~[launcher.jar:1.6.93] at net.minecraft.launcher.Launcher.cleanupOrphanedAssets(Launcher.java:298) ~[launcher.jar:1.6.93] at net.minecraft.launcher.Launcher.performCleanups(Launcher.java:540) ~[launcher.jar:1.6.93] at net.minecraft.launcher.game.MinecraftGameRunner.launchGame(MinecraftGameRunner.java:209) ~[launcher.jar:1.6.93] at com.mojang.launcher.game.runner.AbstractGameRunner.onDownloadJobFinished(AbstractGameRunner.java:186) [launcher.jar:1.6.93] at com.mojang.launcher.updater.download.DownloadJob.popAndDownload(DownloadJob.java:122) [launcher.jar:1.6.93] at com.mojang.launcher.updater.download.DownloadJob.access$000(DownloadJob.java:12) [launcher.jar:1.6.93] at com.mojang.launcher.updater.download.DownloadJob$1.run(DownloadJob.java:86) [launcher.jar:1.6.93] at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) [?:1.8.0_51] at java.util.concurrent.FutureTask.run(FutureTask.java:266) [?:1.8.0_51] at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) [?:1.8.0_51] at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) [?:1.8.0_51] at java.lang.Thread.run(Thread.java:745) [?:1.8.0_51][11:23:11 ERROR]: Game ended with bad state (exit code 1)[11:23:11 INFO]: Ignoring visibility rule and showing launcher due to a game crash[11:23:11 INFO]: Deleting C:\Users\leola\Twitch\Minecraft\Install\versions\forge-36.0.42\forge-36.0.42-natives-1337938020500[11:23:11 WARN]: Couldn't delete C:\Users\leola\Twitch\Minecraft\Install\versions\forge-36.0.42\forge-36.0.42-natives-1337938020500 - scheduling for deletion upon exit