placeholder errors

2021-04-20 02:28:15.806 [main] ERROR - Throwing
java.lang.RuntimeException: java.lang.IncompatibleClassChangeError: Found class com.creeperface.nukkit.placeholderapi.api.PlaceholderAPI, but interface was expected
	at cn.nukkit.plugin.PluginManager.enablePlugin(PluginManager.java:440) [custom.jar:?]
	at cn.nukkit.Server.enablePlugin(Server.java:748) [custom.jar:?]
	at cn.nukkit.Server.enablePlugins(Server.java:737) [custom.jar:?]
	at cn.nukkit.Server.<init>(Server.java:505) [custom.jar:?]
	at cn.nukkit.Nukkit.main(Nukkit.java:120) [custom.jar:?]
Caused by: java.lang.IncompatibleClassChangeError: Found class com.creeperface.nukkit.placeholderapi.api.PlaceholderAPI, but interface was expected
	at Sergey_Dertan.SRegionProtector.Utils.PlaceholdersLoader.<clinit>(PlaceholdersLoader.java:16) ~[?:?]
	at java.lang.Class.forName0(Native Method) ~[?:1.8.0_271]
	at java.lang.Class.forName(Class.java:264) ~[?:1.8.0_271]
	at Sergey_Dertan.SRegionProtector.Main.SRegionProtectorMain.registerPlaceholders(SRegionProtectorMain.java:379) ~[?:?]
	at Sergey_Dertan.SRegionProtector.Main.SRegionProtectorMain.onEnable(SRegionProtectorMain.java:114) ~[?:?]
	at cn.nukkit.plugin.PluginBase.setEnabled(PluginBase.java:89) ~[custom.jar:?]
	at cn.nukkit.plugin.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:117) ~[custom.jar:?]
	at cn.nukkit.plugin.PluginManager.enablePlugin(PluginManager.java:436) ~[custom.jar:?]
	... 4 more
2021-04-20 02:28:15.812 [main] INFO  - Disabling SRegionProtector v30.0


2021-04-20 02:28:17.098 [main] ERROR - Throwing
java.lang.RuntimeException: java.lang.NoSuchMethodError: com.creeperface.nukkit.placeholderapi.placeholder.VisitorSensitivePlaceholder.<init>(Ljava/lang/String;IZLjava/util/Set;ZLjava/util/function/BiFunction;)V
	at cn.nukkit.plugin.PluginManager.enablePlugin(PluginManager.java:440) [custom.jar:?]
	at cn.nukkit.Server.enablePlugin(Server.java:748) [custom.jar:?]
	at cn.nukkit.Server.enablePlugins(Server.java:737) [custom.jar:?]
	at cn.nukkit.Server.<init>(Server.java:580) [custom.jar:?]
	at cn.nukkit.Nukkit.main(Nukkit.java:120) [custom.jar:?]
Caused by: java.lang.NoSuchMethodError: com.creeperface.nukkit.placeholderapi.placeholder.VisitorSensitivePlaceholder.<init>(Ljava/lang/String;IZLjava/util/Set;ZLjava/util/function/BiFunction;)V
	at net.lldv.clansystem.ClanSystem.loadPlugin(ClanSystem.java:79) ~[?:?]
	at net.lldv.clansystem.ClanSystem.onEnable(ClanSystem.java:63) ~[?:?]
	at cn.nukkit.plugin.PluginBase.setEnabled(PluginBase.java:89) ~[custom.jar:?]
	at cn.nukkit.plugin.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:117) ~[custom.jar:?]
	at cn.nukkit.plugin.PluginManager.enablePlugin(PluginManager.java:436) ~[custom.jar:?]
	... 4 more
2021-04-20 02:28:17.099 [main] INFO  - Disabling ClanSystem v1.0.0-SNAPSHOT


2021-04-20 02:28:25.205 [main] ERROR - Throwing
java.lang.RuntimeException: java.lang.NoSuchMethodError: com.creeperface.nukkit.placeholderapi.api.Placeholder.getScope()Lcom/creeperface/nukkit/placeholderapi/api/scope/Scope;
	at cn.nukkit.plugin.PluginManager.enablePlugin(PluginManager.java:440) [custom.jar:?]
	at cn.nukkit.Server.enablePlugin(Server.java:748) [custom.jar:?]
	at cn.nukkit.Server.enablePlugins(Server.java:737) [custom.jar:?]
	at cn.nukkit.Server.<init>(Server.java:580) [custom.jar:?]
	at cn.nukkit.Nukkit.main(Nukkit.java:120) [custom.jar:?]
Caused by: java.lang.NoSuchMethodError: com.creeperface.nukkit.placeholderapi.api.Placeholder.getScope()Lcom/creeperface/nukkit/placeholderapi/api/scope/Scope;
	at com.creeperface.nukkit.placeholderapi.PlaceholderAPIIml.registerPlaceholder(PlaceholderAPIIml.kt:131) ~[?:?]
	at com.creeperface.nukkit.placeholderapi.PlaceholderAPIIml.visitorSensitivePlaceholder(PlaceholderAPIIml.kt:115) ~[?:?]
	at com.creeperface.nukkit.placeholderapi.api.PlaceholderAPI$Builder.build(PlaceholderAPI.kt:306) ~[?:?]
	at com.creeperface.nukkit.placeholderapi.api.scope.DefaultsKt.registerDefaultPlaceholders(Defaults.kt:205) ~[?:?]
	at com.creeperface.nukkit.placeholderapi.PlaceholderAPIIml.init$PlaceholderAPI(PlaceholderAPIIml.kt:70) ~[?:?]
	at com.creeperface.nukkit.placeholderapi.PlaceholderPlugin.onEnable(PlaceholderPlugin.kt:23) ~[?:?]
	at cn.nukkit.plugin.PluginBase.setEnabled(PluginBase.java:89) ~[custom.jar:?]
	at cn.nukkit.plugin.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:117) ~[custom.jar:?]
	at cn.nukkit.plugin.PluginManager.enablePlugin(PluginManager.java:436) ~[custom.jar:?]
	... 4 more
2021-04-20 02:28:25.210 [main] INFO  - Disabling PlaceholderAPI v2.1.1