Microsoft account support?

[TheRealGramdalf]

When trying to add an upload account, it gives the following error:

[15:00:50 ERROR]: [ChangeSkin] Failed to authenticate user: example@example.com
java.io.FileNotFoundException: https://authserver.mojang.com/authenticate
at sun.net.www.protocol.http.HttpURLConnection.getInputStream0(HttpURLConnection.java:1993) ~[?:?]
at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1589) ~[?:?]
at sun.net.www.protocol.https.HttpsURLConnectionImpl.getInputStream(HttpsURLConnectionImpl.java:224) ~[?:?]
at com.github.games647.changeskin.core.MojangAuthApi.authenticate(MojangAuthApi.java:47) ~[ChangeSkinBukkit.jar:?]
at com.github.games647.changeskin.core.ChangeSkinCore.loadAccounts(ChangeSkinCore.java:242) ~[ChangeSkinBukkit.jar:?]
at com.github.games647.changeskin.core.ChangeSkinCore.load(ChangeSkinCore.java:78) ~[ChangeSkinBukkit.jar:?]
at com.github.games647.changeskin.bukkit.ChangeSkinBukkit.onEnable(ChangeSkinBukkit.java:57) ~[ChangeSkinBukkit.jar:?]
at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:264) ~[paper-api-1.19.2-R0.1-SNAPSHOT.jar:?]
at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:370) ~[paper-api-1.19.2-R0.1-SNAPSHOT.jar:?]
at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:542) ~[paper-api-1.19.2-R0.1-SNAPSHOT.jar:?]
at org.bukkit.craftbukkit.v1_19_R1.CraftServer.enablePlugin(CraftServer.java:563) ~[paper-1.19.2.jar:git-Paper-112]
at org.bukkit.craftbukkit.v1_19_R1.CraftServer.enablePlugins(CraftServer.java:477) ~[paper-1.19.2.jar:git-Paper-112]
at net.minecraft.server.MinecraftServer.loadWorld0(MinecraftServer.java:636) ~[paper-1.19.2.jar:git-Paper-112]
at net.minecraft.server.MinecraftServer.loadLevel(MinecraftServer.java:422) ~[paper-1.19.2.jar:git-Paper-112]
at net.minecraft.server.dedicated.DedicatedServer.initServer(DedicatedServer.java:306) ~[paper-1.19.2.jar:git-Paper-112]
at net.minecraft.server.MinecraftServer.runServer(MinecraftServer.java:1124) ~[paper-1.19.2.jar:git-Paper-112]
at net.minecraft.server.MinecraftServer.lambda$spin$0(MinecraftServer.java:305) ~[paper-1.19.2.jar:git-Paper-112]
at java.lang.Thread.run(Thread.java:833) ~[?:?]

Is this because my MC account is an MS account? It was migrated from mojang, not created new after the switch.