I know there are multiple topics about that, but none of it is about Spring Tools Suite. And i'm finding informations that this file no longer exists in newer Java versions, which seems to be true, since i cannot find it. I'm absolutely lost now.
Put -vm argument above -vmargs in SpringToolSuite4.ini file
-startup
plugins/org.eclipse.equinox.launcher_1.5.600.v20191014-2022.jar
--launcher.library
plugins/org.eclipse.equinox.launcher.win32.win32.x86_64_1.1.1100.v20190907-0426
-product
org.springframework.boot.ide.branding.sts4
--launcher.defaultAction
openFile
-vm
C:\Program Files\Java\jdk1.8.0_181\bin\javaw.exe
-vmargs
-Dosgi.requiredJavaVersion=1.8
-Xms256m
-Xmx1024m
-XX:+UseG1GC
-XX:+UseStringDeduplication
--add-modules=ALL-SYSTEM