Trial 1:

11:08:27.027
Preparing to launch minecraft client for 1.16.5-OptiFine_HD_U_G6
11:08:27.096
Couldn't fetch SHA1 checksum for http://s3.amazonaws.com/Minecraft.Download/indexes/legacy.json
11:08:27.097
Have local file C:\Users\jthom\AppData\Roaming\.minecraft\assets\indexes\legacy.json but don't know what size or hash it should be. Have to assume it's good.
11:08:27.616
Couldn't fetch SHA1 checksum for https://s3.amazonaws.com/Minecraft.Download/versions/1.16.5-OptiFine_HD_U_G6/1.16.5-OptiFine_HD_U_G6.jar
11:08:27.617
Have local file C:\Users\jthom\AppData\Roaming\.minecraft\versions\1.16.5-OptiFine_HD_U_G6\1.16.5-OptiFine_HD_U_G6.jar but don't know what size or hash it should be. Have to assume it's good.
11:08:27.684
Checking installations.
11:08:27.686
Minecraft client 1.16.5-OptiFine_HD_U_G6 is ready to start.
11:08:27.686
Starting!
11:08:28.145
Version does not support log configuration, will assume one plaintext entry per line
11:08:34.662
Usage: javaw [-options] class [args...]
11:08:34.662
(to execute a class)
11:08:34.662
or  javaw [-options] -jar jarfile [args...]
11:08:34.662
(to execute a jar file)
11:08:34.662
where options include:
11:08:34.662
-d32	  use a 32-bit data model if available
11:08:34.662
-d64	  use a 64-bit data model if available




Trial 2:

11:09:02.116
Preparing to launch minecraft client for 1.16.5-OptiFine_HD_U_G6
11:09:02.197
Couldn't fetch SHA1 checksum for http://s3.amazonaws.com/Minecraft.Download/indexes/legacy.json
11:09:02.198
Have local file C:\Users\jthom\AppData\Roaming\.minecraft\assets\indexes\legacy.json but don't know what size or hash it should be. Have to assume it's good.
11:09:02.719
Couldn't fetch SHA1 checksum for https://s3.amazonaws.com/Minecraft.Download/versions/1.16.5-OptiFine_HD_U_G6/1.16.5-OptiFine_HD_U_G6.jar
11:09:02.720
Have local file C:\Users\jthom\AppData\Roaming\.minecraft\versions\1.16.5-OptiFine_HD_U_G6\1.16.5-OptiFine_HD_U_G6.jar but don't know what size or hash it should be. Have to assume it's good.
11:09:02.794
Checking installations.
11:09:02.796
Minecraft client 1.16.5-OptiFine_HD_U_G6 is ready to start.
11:09:02.796
Starting!
11:09:03.269
Version does not support log configuration, will assume one plaintext entry per line
11:09:09.691
Usage: javaw [-options] class [args...]
11:09:09.691
(to execute a class)
11:09:09.691
or  javaw [-options] -jar jarfile [args...]
11:09:09.691
(to execute a jar file)
11:09:09.691
where options include:
11:09:09.691
-d32	  use a 32-bit data model if available
11:09:09.691
-d64	  use a 64-bit data model if available
11:09:09.707
-da[:<packagename>...|:<classname>]
11:09:09.708
-disableassertions[:<packagename>...|:<classname>]
11:09:09.708
disable assertions with specified granularity
11:09:09.708
-esa | -enablesystemassertions
11:09:09.708
enable system assertions
11:09:09.708
-dsa | -disablesystemassertions
11:09:09.708
disable system assertions
11:09:09.708
-agentlib:<libname>[=<options>]
11:09:09.708
load native agent library <libname>, e.g. -agentlib:hprof
11:09:09.708
see also, -agentlib:jdwp=help and -agentlib:hprof=help
11:09:09.708
-agentpath:<pathname>[=<options>]
11:09:09.708
load native agent library by full pathname
11:09:09.708
-javaagent:<jarpath>[=<options>]
11:09:09.708
load Java programming language agent, see java.lang.instrument
11:09:09.708
-splash:<imagepath>
11:09:09.708
show splash screen with specified image
11:09:09.708
See http://www.oracle.com/technetwork/java/javase/documentation/index.html for more details.
11:09:09.836
Process crashed with exit code 1


Trial 3:

11:10:11.299
Preparing to launch minecraft client for 1.16.5-OptiFine_HD_U_G6
11:10:11.372
Couldn't fetch SHA1 checksum for http://s3.amazonaws.com/Minecraft.Download/indexes/legacy.json
11:10:11.373
Have local file C:\Users\jthom\AppData\Roaming\.minecraft\assets\indexes\legacy.json but don't know what size or hash it should be. Have to assume it's good.
11:10:11.891
Couldn't fetch SHA1 checksum for https://s3.amazonaws.com/Minecraft.Download/versions/1.16.5-OptiFine_HD_U_G6/1.16.5-OptiFine_HD_U_G6.jar
11:10:11.893
Have local file C:\Users\jthom\AppData\Roaming\.minecraft\versions\1.16.5-OptiFine_HD_U_G6\1.16.5-OptiFine_HD_U_G6.jar but don't know what size or hash it should be. Have to assume it's good.
11:10:11.967
Checking installations.
11:10:11.969
Minecraft client 1.16.5-OptiFine_HD_U_G6 is ready to start.
11:10:11.969
Starting!
11:10:12.422
Version does not support log configuration, will assume one plaintext entry per line
11:10:18.844
Usage: javaw [-options] class [args...]
11:10:18.844
(to execute a class)
11:10:18.844
or  javaw [-options] -jar jarfile [args...]
11:10:18.844
(to execute a jar file)
11:10:18.844
where options include:
11:10:18.844
-d32	  use a 32-bit data model if available
11:10:18.844
-d64	  use a 64-bit data model if available
11:10:18.864
-da[:<packagename>...|:<classname>]
11:10:18.864
-disableassertions[:<packagename>...|:<classname>]
11:10:18.865
disable assertions with specified granularity
11:10:18.865
-esa | -enablesystemassertions
11:10:18.865
enable system assertions
11:10:18.865
-dsa | -disablesystemassertions
11:10:18.865
disable system assertions
11:10:18.865
-agentlib:<libname>[=<options>]
11:10:18.865
load native agent library <libname>, e.g. -agentlib:hprof
11:10:18.865
see also, -agentlib:jdwp=help and -agentlib:hprof=help
11:10:18.865
-agentpath:<pathname>[=<options>]
11:10:18.865
load native agent library by full pathname
11:10:18.865
-javaagent:<jarpath>[=<options>]
11:10:18.865
load Java programming language agent, see java.lang.instrument
11:10:18.865
-splash:<imagepath>
11:10:18.865
show splash screen with specified image
11:10:18.865
See http://www.oracle.com/technetwork/java/javase/documentation/index.html for more details.
11:10:18.992
Process crashed with exit code 1