У меня стоит Linux.
Версия java:
openjdk version "11.0.14" 2022-01-18
OpenJDK Runtime Environment Temurin-11.0.14+9 (build 11.0.14+9)
OpenJDK 64-Bit Server VM Temurin-11.0.14+9 (build 11.0.14+9, mixed mode)
После запуска SimpleMinecraft.jar (java -jar ./Downloads/SimpleMinecraft.jar)
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by ru.simplemc.updater.utils.ProgramUtils (file:/home/vector1dev/Downloads/SimpleMinecraft.jar) to field java.nio.charset.Charset.defaultCharset
WARNING: Please consider reporting this to the maintainers of ru.simplemc.updater.utils.ProgramUtils
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
WARNING: sun.reflect.Reflection.getCallerClass is not supported. This will impact performance.
[10:52:42] [Updater] [main/INFO]: Updater is started!
[10:52:42] [Updater] [main/INFO]: Version: [Fall Update - 2.0.6]
[10:52:42] [Updater] [main/INFO]: Preparing system environments...
[10:52:42] [Updater] [main/INFO]: Preparing Frame...
[10:52:43] [Updater] [main/INFO]: Preparing HttpService...
[10:52:43] [Updater] [main/INFO]: Preparing UpdaterThread...
[10:52:43] [Updater] [main/INFO]: UpdaterThread started!
[10:52:43] [Updater] [Updater Thread/INFO]: Checking for updates...
[10:52:43] [Updater] [Updater Thread/INFO]: Create connection to https://launcher.simpleminecraft.ru/launcher/checkUpdates
[10:52:43] [Updater] [Updater Thread/INFO]: Writing POST data to https://launcher.simpleminecraft.ru/launcher/checkUpdates: {"systemId":"linux-x64","applicationFormat":"jar"}
[10:52:43] [Updater] [Updater Thread/INFO]: Reading data from https://launcher.simpleminecraft.ru/launcher/checkUpdates
[10:52:43] [Updater] [Updater Thread/INFO]: Successful read, server response was 200
[10:52:43] [Updater] [Updater Thread/INFO]: Response: {"launcherFileInfo":{"path":"/program/Launcher.jar","name":"Launcher.jar","url":"launcher.simpleminecraft.ru/resources/program/Launcher.jar?52fa4bcdb8950e894ceb97ab72b26427","md5":"52fa4bcdb8950e894ceb97ab72b26427","size":11270724},"updaterFileInfo":{"path":"/program/SimpleMinecraft.jar","name":"SimpleMinecraft.jar","url":"launcher.simpleminecraft.ru/resources/program/SimpleMinecraft.jar?bb883569c44edfa2553d6eddecd1a5de","md5":"bb883569c44edfa2553d6eddecd1a5de","size":8811378},"runtimesFileInfos":[{"path":"/runtime/game/jre-8u51-linux-x64.tar.gz","name":"jre-8u51-linux-x64.tar.gz","url":"launcher.simpleminecraft.ru/resources/runtime/game/jre-8u51-linux-x64.tar.gz?3c4e3ed6b1c61fe18b9a88ea8b2d9384","md5":"3c4e3ed6b1c61fe18b9a88ea8b2d9384","size":63861111}]}
[10:52:43] [Updater] [Updater Thread/INFO]: Checking for files...
[10:52:43] [Updater] [Updater Thread/INFO]: Create connection to https://launcher.simpleminecraft.ru/resources/program/Launcher.jar?52fa4bcdb8950e894ceb97ab72b26427
[10:52:44] [Updater] [Updater Thread/INFO]: Connection closed.
[10:52:44] [Updater] [Updater Thread/INFO]: Create connection to https://launcher.simpleminecraft.ru/resources/runtime/game/jre-8u51-linux-x64.tar.gz?3c4e3ed6b1c61fe18b9a88ea8b2d9384
[10:52:50] [Updater] [Updater Thread/INFO]: Connection closed.
[10:52:50] [Updater] [Updater Thread/INFO]: Starting Launcher application...
[10:52:51] [Updater] [Updater Thread/INFO]: Launcher application is started!
[10:52:51] [Updater] [Updater Thread/INFO]: Program is closed! Bye-bye!
И всё, интерфейс лаунчера не появляется. Появляется папка simpleminecraft в домашней папке.
(vpn не помогает)