show this error

C:\Users\Fervila\AppData\Roaming\.minecraft\libraries\java3d\vecmath\1.5.2\vecmath-1.5.2.jar;C:\Users\Fervila\AppData\Roaming\.minecraft\libraries\net\sf\trove4j\trove4j\3.0.3\trove4j-3.0.3.jar;C:\Users\Fervila\AppData\Roaming\.minecraft\libraries\com\ibm\icu\icu4j-core-mojang\51.2\icu4j-core-mojang-51.2.jar;C:\Users\Fervila\AppData\Roaming\.minecraft\libraries\net\sf\jopt-simple\jopt-simple\4.6\jopt-simple-4.6.jar;C:\Users\Fervila\AppData\Roaming\.minecraft\libraries\com\paulscode\codecjorbis\20101023\codecjorbis-20101023.jar;C:\Users\Fervila\AppData\Roaming\.minecraft\libraries\com\paulscode\codecwav\20101023\codecwav-20101023.jar;C:\Users\Fervila\AppData\Roaming\.minecraft\libraries\com\paulscode\libraryjavasound\20101123\libraryjavasound-20101123.jar;C:\Users\Fervila\AppData\Roaming\.minecraft\libraries\com\paulscode\librarylwjglopenal\20100824\librarylwjglopenal-20100824.jar;C:\Users\Fervila\AppData\Roaming\.minecraft\libraries\com\paulscode\soundsystem\20120107\soundsystem-20120107.jar;C:\Users\Fervila\AppData\Roaming\.minecraft\libraries\io\netty\netty-all\4.0.15.Final\netty-all-4.0.15.Final.jar;C:\Users\Fervila\AppData\Roaming\.minecraft\libraries\com\google\guava\guava\17.0\guava-17.0.jar;C:\Users\Fervila\AppData\Roaming\.minecraft\libraries\org\apache\commons\commons-lang3\3.3.2\commons-lang3-3.3.2.jar;C:\Users\Fervila\AppData\Roaming\.minecraft\libraries\commons-io\commons-io\2.4\commons-io-2.4.jar;C:\Users\Fervila\AppData\Roaming\.minecraft\libraries\commons-codec\commons-codec\1.9\commons-codec-1.9.jar;C:\Users\Fervila\AppData\Roaming\.minecraft\libraries\net\java\jinput\jinput\2.0.5\jinput-2.0.5.jar;C:\Users\Fervila\AppData\Roaming\.minecraft\libraries\net\java\jutils\jutils\1.0.0\jutils-1.0.0.jar;C:\Users\Fervila\AppData\Roaming\.minecraft\libraries\com\google\code\gson\gson\2.2.4\gson-2.2.4.jar;C:\Users\Fervila\AppData\Roaming\.minecraft\libraries\com\mojang\authlib\1.5.17\authlib-1.5.17.jar;C:\Users\Fervila\AppData\Roaming\.minecraft\libraries\com\mojang\realms\1.6.1\realms-1.6.1.jar;C:\Users\Fervila\AppData\Roaming\.minecraft\libraries\org\apache\commons\commons-compress\1.8.1\commons-compress-1.8.1.jar;C:\Users\Fervila\AppData\Roaming\.minecraft\libraries\org\apache\httpcomponents\httpclient\4.3.3\httpclient-4.3.3.jar;C:\Users\Fervila\AppData\Roaming\.minecraft\libraries\commons-logging\commons-logging\1.1.3\commons-logging-1.1.3.jar;C:\Users\Fervila\AppData\Roaming\.minecraft\libraries\org\apache\httpcomponents\httpcore\4.3.2\httpcore-4.3.2.jar;C:\Users\Fervila\AppData\Roaming\.minecraft\libraries\org\apache\logging\log4j\log4j-api\2.0-beta9\log4j-api-2.0-beta9.jar;C:\Users\Fervila\AppData\Roaming\.minecraft\libraries\org\apache\logging\log4j\log4j-core\2.0-beta9\log4j-core-2.0-beta9.jar;C:\Users\Fervila\AppData\Roaming\.minecraft\libraries\org\lwjgl\lwjgl\lwjgl\2.9.1\lwjgl-2.9.1.jar;C:\Users\Fervila\AppData\Roaming\.minecraft\libraries\org\lwjgl\lwjgl\lwjgl_util\2.9.1\lwjgl_util-2.9.1.jar;C:\Users\Fervila\AppData\Roaming\.minecraft\libraries\tv\twitch\twitch\6.5\twitch-6.5.jar;C:\Users\Fervila\AppData\Roaming\.minecraft\versions\1.8\1.8.jar net.minecraft.client.main.Main
[12:22:39 INFO]: Looking for orphaned versions to clean up...
[12:22:39 SEVERE]: Fatal error launching game. Report this to http://bugs.mojang.com please!
java.io.FileNotFoundException: File 'C:\Users\Fervila\AppData\Roaming\.minecraft\assets\indexes\legacy.json' does not exist
at org.apache.commons.io.FileUtils.openInputStream(FileUtils.java:299)
at org.apache.commons.io.FileUtils.readFileToString(FileUtils.java:1711)
at net.minecraft.launcher.Launcher.aU(Unknown Source)
at net.minecraft.launcher.Launcher.ba(Unknown Source)
at net.minecraft.launcher.a.a.W(Unknown Source)
at com.mojang.launcher.b.b.a.b(Unknown Source)
at com.mojang.launcher.updater.download.DownloadJob.popAndDownload(Unknown Source)
at com.mojang.launcher.updater.download.DownloadJob.access$0(Unknown Source)
at com.mojang.launcher.updater.download.DownloadJob$1.run(Unknown Source)
at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)
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)

[12:22:42 INFO]: Client> [12:22:42] [Client thread/INFO]: Setting user: fer
[12:22:43 INFO]: Client> [12:22:43] [Client thread/INFO]: (Session ID is token:1337535510N:05e65cd8d65c4b82a58b2049a2596960)
[12:22:46 INFO]: Client> [12:22:46] [Client thread/INFO]: LWJGL Version: 2.9.1
[12:22:46 INFO]: Client> [12:22:46] [Client thread/INFO]: Reloading ResourceManager: Default
[12:22:48 INFO]: Client> [12:22:48] [Sound Library Loader/INFO]: Starting up SoundSystem...
[12:22:48 INFO]: Client> [12:22:48] [Client thread/WARN]: File minecraft:sounds/mob/ghast/fireball.ogg does not exist, cannot add it to event minecraft:item.fireCharge.use
[12:22:48 INFO]: Client> [12:22:48] [Thread-6/INFO]: Initializing LWJGL OpenAL
[12:22:48 INFO]: Client> [12:22:48] [Thread-6/INFO]: (The LWJGL binding of OpenAL. For more information, see http://www.lwjgl.org)
[12:22:49 INFO]: Client> [12:22:49] [Thread-6/INFO]: OpenAL initialized.
[12:22:49 INFO]: Client> [12:22:49] [Sound Library Loader/INFO]: Sound engine started
[12:22:52 INFO]: Client> [12:22:52] [Client thread/INFO]: Created: 512x512 textures-atlas
[12:22:53 INFO]: Client> #
[12:22:53 INFO]: Client> # A fatal error has been detected by the Java Runtime Environment:
[12:22:53 INFO]: Client> #
[12:22:53 INFO]: Client> # EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x26393e88, pid=5032, tid=5048
[12:22:53 INFO]: Client> #
[12:22:53 INFO]: Client> # JRE version: Java(TM) SE Runtime Environment (8.0_25-b18) (build 1.8.0_25-b18)
[12:22:53 INFO]: Client> # Java VM: Java HotSpot(TM) Client VM (25.25-b02 mixed mode windows-x86 )
[12:22:53 INFO]: Client> # Problematic frame:
[12:22:53 INFO]: Client> # C [ig4dev32.dll+0x3e88]
[12:22:53 INFO]: Client> #
[12:22:53 INFO]: Client> # Failed to write core dump. Minidumps are not enabled by default on client versions of Windows
[12:22:53 INFO]: Client> #
[12:22:53 INFO]: Client> # An error report file with more information is saved as:
[12:22:53 INFO]: Client> # C:\Users\Fervila\AppData\Roaming\.minecraft\hs_err_pid5032.log
[12:22:53 INFO]: Client> #
[12:22:53 INFO]: Client> # If you would like to submit a bug report, please visit:
[12:22:53 INFO]: Client> # http://bugreport.sun.com/bugreport/crash.jsp
[12:22:53 INFO]: Client> # The crash happened outside the Java Virtual Machine in native code.
[12:22:53 INFO]: Client> # See problematic frame for where to report the bug.
[12:22:53 INFO]: Client> #
[12:22:53 INFO]: Client> AL lib: (EE) alc_cleanup: 1 device not closed
[12:22:53 SEVERE]: Game ended with bad state (exit code 1)
[12:22:53 INFO]: Ignoring visibility rule and showing launcher due to a game crash
[12:22:53 INFO]: Deleting C:\Users\Fervila\AppData\Roaming\.minecraft\versions\1.8\1.8-natives-1132294844762
[12:22:53 WARNING]: Couldn't delete C:\Users\Fervila\AppData\Roaming\.minecraft\versions\1.8\1.8-natives-1132294844762 - scheduling for deletion upon exit