[06:04:48] [Server thread/ERROR]: Cannot load plugins/RealVillagerTowns/saves.yml
org.bukkit.configuration.InvalidConfigurationException: could not determine a constructor for the tag tag:yaml.org,2002:org.bukkit.Material
 in 'string', line 10, column 10:
        has: !!org.bukkit.Material 'POPPY'
             ^

	at org.bukkit.configuration.file.YamlConfiguration.loadFromString(YamlConfiguration.java:56) ~[patched_1.14.4.jar:git-Paper-232]
	at org.bukkit.configuration.file.FileConfiguration.load(FileConfiguration.java:160) ~[patched_1.14.4.jar:git-Paper-232]
	at org.bukkit.configuration.file.FileConfiguration.load(FileConfiguration.java:128) ~[patched_1.14.4.jar:git-Paper-232]
	at org.bukkit.configuration.file.YamlConfiguration.loadConfiguration(YamlConfiguration.java:183) ~[patched_1.14.4.jar:git-Paper-232]
	at io.hotmail.com.jacob_vejvoda.RVT.RVT.<init>(RVT.java:68) ~[?:?]
	at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) ~[?:1.8.0_201]
	at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source) ~[?:1.8.0_201]
	at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source) ~[?:1.8.0_201]
	at java.lang.reflect.Constructor.newInstance(Unknown Source) ~[?:1.8.0_201]
	at java.lang.Class.newInstance(Unknown Source) ~[?:1.8.0_201]
	at org.bukkit.plugin.java.PluginClassLoader.<init>(PluginClassLoader.java:75) ~[patched_1.14.4.jar:git-Paper-232]
	at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:134) ~[patched_1.14.4.jar:git-Paper-232]
	at org.bukkit.plugin.SimplePluginManager.loadPlugin(SimplePluginManager.java:337) ~[patched_1.14.4.jar:git-Paper-232]
	at org.bukkit.plugin.SimplePluginManager.loadPlugins(SimplePluginManager.java:257) ~[patched_1.14.4.jar:git-Paper-232]
	at org.bukkit.craftbukkit.v1_14_R1.CraftServer.loadPlugins(CraftServer.java:355) ~[patched_1.14.4.jar:git-Paper-232]
	at net.minecraft.server.v1_14_R1.DedicatedServer.init(DedicatedServer.java:226) ~[patched_1.14.4.jar:git-Paper-232]
	at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:876) ~[patched_1.14.4.jar:git-Paper-232]
	at java.lang.Thread.run(Unknown Source) [?:1.8.0_201]
Caused by: org.yaml.snakeyaml.constructor.ConstructorException: could not determine a constructor for the tag tag:yaml.org,2002:org.bukkit.Material
 in 'string', line 10, column 10:
        has: !!org.bukkit.Material 'POPPY'
             ^

	at org.yaml.snakeyaml.constructor.SafeConstructor$ConstructUndefined.construct(SafeConstructor.java:541) ~[patched_1.14.4.jar:git-Paper-232]
	at org.yaml.snakeyaml.constructor.BaseConstructor.constructObjectNoCheck(BaseConstructor.java:204) ~[patched_1.14.4.jar:git-Paper-232]
	at org.yaml.snakeyaml.constructor.BaseConstructor.constructObject(BaseConstructor.java:193) ~[patched_1.14.4.jar:git-Paper-232]
	at org.yaml.snakeyaml.constructor.BaseConstructor.constructMapping2ndStep(BaseConstructor.java:453) ~[patched_1.14.4.jar:git-Paper-232]
	at org.yaml.snakeyaml.constructor.SafeConstructor.constructMapping2ndStep(SafeConstructor.java:184) ~[patched_1.14.4.jar:git-Paper-232]
	at org.yaml.snakeyaml.constructor.BaseConstructor.constructMapping(BaseConstructor.java:434) ~[patched_1.14.4.jar:git-Paper-232]
	at org.yaml.snakeyaml.constructor.SafeConstructor$ConstructYamlMap.construct(SafeConstructor.java:521) ~[patched_1.14.4.jar:git-Paper-232]
	at org.bukkit.configuration.file.YamlConstructor$ConstructCustomObject.construct(YamlConstructor.java:28) ~[patched_1.14.4.jar:git-Paper-232]
	at org.yaml.snakeyaml.constructor.BaseConstructor.constructObjectNoCheck(BaseConstructor.java:204) ~[patched_1.14.4.jar:git-Paper-232]
	at org.yaml.snakeyaml.constructor.BaseConstructor.constructObject(BaseConstructor.java:193) ~[patched_1.14.4.jar:git-Paper-232]
	at org.yaml.snakeyaml.constructor.BaseConstructor.constructMapping2ndStep(BaseConstructor.java:453) ~[patched_1.14.4.jar:git-Paper-232]
	at org.yaml.snakeyaml.constructor.SafeConstructor.constructMapping2ndStep(SafeConstructor.java:184) ~[patched_1.14.4.jar:git-Paper-232]
	at org.yaml.snakeyaml.constructor.BaseConstructor.constructMapping(BaseConstructor.java:434) ~[patched_1.14.4.jar:git-Paper-232]
	at org.yaml.snakeyaml.constructor.SafeConstructor$ConstructYamlMap.construct(SafeConstructor.java:521) ~[patched_1.14.4.jar:git-Paper-232]
	at org.bukkit.configuration.file.YamlConstructor$ConstructCustomObject.construct(YamlConstructor.java:28) ~[patched_1.14.4.jar:git-Paper-232]
	at org.yaml.snakeyaml.constructor.BaseConstructor.constructObjectNoCheck(BaseConstructor.java:204) ~[patched_1.14.4.jar:git-Paper-232]
	at org.yaml.snakeyaml.constructor.BaseConstructor.constructObject(BaseConstructor.java:193) ~[patched_1.14.4.jar:git-Paper-232]
	at org.yaml.snakeyaml.constructor.BaseConstructor.constructMapping2ndStep(BaseConstructor.java:453) ~[patched_1.14.4.jar:git-Paper-232]
	at org.yaml.snakeyaml.constructor.SafeConstructor.constructMapping2ndStep(SafeConstructor.java:184) ~[patched_1.14.4.jar:git-Paper-232]
	at org.yaml.snakeyaml.constructor.BaseConstructor.constructMapping(BaseConstructor.java:434) ~[patched_1.14.4.jar:git-Paper-232]
	at org.yaml.snakeyaml.constructor.SafeConstructor$ConstructYamlMap.construct(SafeConstructor.java:521) ~[patched_1.14.4.jar:git-Paper-232]
	at org.bukkit.configuration.file.YamlConstructor$ConstructCustomObject.construct(YamlConstructor.java:28) ~[patched_1.14.4.jar:git-Paper-232]
	at org.yaml.snakeyaml.constructor.BaseConstructor.constructObjectNoCheck(BaseConstructor.java:204) ~[patched_1.14.4.jar:git-Paper-232]
	at org.yaml.snakeyaml.constructor.BaseConstructor.constructObject(BaseConstructor.java:193) ~[patched_1.14.4.jar:git-Paper-232]
	at org.yaml.snakeyaml.constructor.BaseConstructor.constructDocument(BaseConstructor.java:159) ~[patched_1.14.4.jar:git-Paper-232]
	at org.yaml.snakeyaml.constructor.BaseConstructor.getSingleData(BaseConstructor.java:146) ~[patched_1.14.4.jar:git-Paper-232]
	at org.yaml.snakeyaml.Yaml.loadFromReader(Yaml.java:524) ~[patched_1.14.4.jar:git-Paper-232]
	at org.yaml.snakeyaml.Yaml.load(Yaml.java:437) ~[patched_1.14.4.jar:git-Paper-232]
	at org.bukkit.configuration.file.YamlConfiguration.loadFromString(YamlConfiguration.java:54) ~[patched_1.14.4.jar:git-Paper-232]
	... 17 more