[12:32:22 ERROR]: Could not load 'plugins\HelmetSet-1.0-SNAPSHOT.jar' in folder 'plugins'
org.bukkit.plugin.InvalidPluginException: java.lang.NoClassDefFoundError: net/skinsrestorer/api/exception/SkinRequestException
        at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:157) ~[patched_1.16.5.jar:git-Purpur-1171]
        at org.bukkit.plugin.SimplePluginManager.loadPlugin(SimplePluginManager.java:414) ~[patched_1.16.5.jar:git-Purpur-1171]
        at org.bukkit.plugin.SimplePluginManager.loadPlugins(SimplePluginManager.java:322) ~[patched_1.16.5.jar:git-Purpur-1171]
        at org.bukkit.craftbukkit.v1_16_R3.CraftServer.loadPlugins(CraftServer.java:393) ~[patched_1.16.5.jar:git-Purpur-1171]
        at net.minecraft.server.v1_16_R3.DedicatedServer.init(DedicatedServer.java:279) ~[patched_1.16.5.jar:git-Purpur-1171]
        at net.minecraft.server.v1_16_R3.MinecraftServer.w(MinecraftServer.java:1074) ~[patched_1.16.5.jar:git-Purpur-1171]
        at net.minecraft.server.v1_16_R3.MinecraftServer.lambda$a$0(MinecraftServer.java:293) ~[patched_1.16.5.jar:git-Purpur-1171]
        at java.lang.Thread.run(Thread.java:831) [?:?]
Caused by: java.lang.NoClassDefFoundError: net/skinsrestorer/api/exception/SkinRequestException
        at java.lang.Class.forName0(Native Method) ~[?:?]
        at java.lang.Class.forName(Class.java:466) ~[?:?]
        at org.bukkit.plugin.java.PluginClassLoader.<init>(PluginClassLoader.java:82) ~[patched_1.16.5.jar:git-Purpur-1171]
        at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:153) ~[patched_1.16.5.jar:git-Purpur-1171]
        ... 7 more
Caused by: java.lang.ClassNotFoundException: net.skinsrestorer.api.exception.SkinRequestException
        at org.bukkit.plugin.java.PluginClassLoader.loadClass0(PluginClassLoader.java:155) ~[patched_1.16.5.jar:git-Purpur-1171]
        at org.bukkit.plugin.java.PluginClassLoader.loadClass(PluginClassLoader.java:114) ~[patched_1.16.5.jar:git-Purpur-1171]
        at java.lang.ClassLoader.loadClass(ClassLoader.java:519) ~[?:?]
        at java.lang.Class.forName0(Native Method) ~[?:?]
        at java.lang.Class.forName(Class.java:466) ~[?:?]
        at org.bukkit.plugin.java.PluginClassLoader.<init>(PluginClassLoader.java:82) ~[patched_1.16.5.jar:git-Purpur-1171]
        at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:153) ~[patched_1.16.5.jar:git-Purpur-1171]