02:20:57.725 launcher main Preparing to launch minecraft client for 1.16.5-OptiFine_HD_U_G8_pre1
02:20:57.948 launcher main Couldn't fetch SHA1 checksum for http://s3.amazonaws.com/Minecraft.Download/indexes/legacy.json
02:20:57.949 launcher main Have local file C:\Users\VanillaChanny\AppData\Roaming\.minecraft\assets\indexes\legacy.json but don't know what size or hash it should be. Have to assume it's good.
02:20:58.823 launcher main Couldn't fetch SHA1 checksum for https://s3.amazonaws.com/Minecraft.Download/versions/1.16.5-OptiFine_HD_U_G8_pre1/1.16.5-OptiFine_HD_U_G8_pre1.jar
02:20:58.824 launcher main Have local file C:\Users\VanillaChanny\AppData\Roaming\.minecraft\versions\1.16.5-OptiFine_HD_U_G8_pre1\1.16.5-OptiFine_HD_U_G8_pre1.jar but don't know what size or hash it should be. Have to assume it's good.
02:20:58.824 launcher main Checking installations.
02:20:58.825 launcher main Minecraft client 1.16.5-OptiFine_HD_U_G8_pre1 is ready to start.
02:20:58.825 launcher main Starting!
02:20:59.220 launcher main Version does not support log configuration, will assume one plaintext entry per line
02:21:04.243 game Usage: javaw [-options] class [args...]
02:21:04.243 game (to execute a class)
02:21:04.243 game or  javaw [-options] -jar jarfile [args...]
02:21:04.243 game (to execute a jar file)
02:21:04.243 game where options include:
02:21:04.243 game -d32	  use a 32-bit data model if available
02:21:04.243 game -d64	  use a 64-bit data model if available
02:21:04.243 game -server	  to select the "server" VM
02:21:04.243 game The default VM is server.
02:21:04.243 game
02:21:04.243 game -cp <class search path of directories and zip/jar files>
02:21:04.243 game -classpath <class search path of directories and zip/jar files>
02:21:04.243 game A ; separated list of directories, JAR archives,
02:21:04.243 game and ZIP archives to search for class files.
02:21:04.243 game -D<name>=<value>
02:21:04.243 game set a system property
02:21:04.243 game -verbose:[class|gc|jni]
02:21:04.243 game enable verbose output
02:21:04.243 game -version      print product version and exit
02:21:04.243 game -version:<value>
02:21:04.243 game require the specified version to run
02:21:04.243 game -showversion  print product version and continue
02:21:04.243 game -jre-restrict-search | -no-jre-restrict-search
02:21:04.243 game include/exclude user private JREs in the version search
02:21:04.243 game -? -help      print this help message
02:21:04.243 game -X            print help on non-standard options
02:21:04.243 game -ea[:<packagename>...|:<classname>]
02:21:04.243 game -enableassertions[:<packagename>...|:<classname>]
02:21:04.243 game enable assertions with specified granularity
02:21:04.243 game -da[:<packagename>...|:<classname>]
02:21:04.243 game -disableassertions[:<packagename>...|:<classname>]
02:21:04.243 game disable assertions with specified granularity
02:21:04.243 game -esa | -enablesystemassertions
02:21:04.243 game enable system assertions
02:21:04.243 game -dsa | -disablesystemassertions
02:21:04.243 game disable system assertions
02:21:04.243 game -agentlib:<libname>[=<options>]
02:21:04.243 game load native agent library <libname>, e.g. -agentlib:hprof
02:21:04.243 game see also, -agentlib:jdwp=help and -agentlib:hprof=help
02:21:04.243 game -agentpath:<pathname>[=<options>]
02:21:04.243 game load native agent library by full pathname
02:21:04.243 game -javaagent:<jarpath>[=<options>]
02:21:04.243 game load Java programming language agent, see java.lang.instrument
02:21:04.243 game -splash:<imagepath>
02:21:04.243 game show splash screen with specified image
02:21:04.243 game See http://www.oracle.com/technetwork/java/javase/documentation/index.html for more details.
02:21:04.403 monitor Process Monitor Process crashed with exit code 1