pocket horse start up error

[09:43:36] [Craft Scheduler Thread - 14/WARN]: [PocketHorses] Plugin PocketHorses v1.7.1 generated an exception while executing task 63
java.lang.NoClassDefFoundError: com/ticxo/modelengine/api/entity/BaseEntity
        at it.pika.pockethorses.storage.impl.SQLite.lambda$init$0(SQLite.java:48) ~[?:?]
        at org.bukkit.craftbukkit.v1_20_R1.scheduler.CraftTask.run(CraftTask.java:82) ~[spigot-1.20.1-R0.1-SNAPSHOT.jar:3822-Spigot-9ebce8a-b60a95c]
        at org.bukkit.craftbukkit.v1_20_R1.scheduler.CraftAsyncTask.run(CraftAsyncTask.java:54) ~[spigot-1.20.1-R0.1-SNAPSHOT.jar:3822-Spigot-9ebce8a-b60a95c]
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136) ~[?:?]
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635) ~[?:?]
        at java.lang.Thread.run(Thread.java:833) ~[?:?]
Caused by: java.lang.ClassNotFoundException: com.ticxo.modelengine.api.entity.BaseEntity
        at org.bukkit.plugin.java.PluginClassLoader.loadClass0(PluginClassLoader.java:147) ~[spigot-api-1.20.1-R0.1-SNAPSHOT.jar:?]
        at org.bukkit.plugin.java.PluginClassLoader.loadClass(PluginClassLoader.java:99) ~[spigot-api-1.20.1-R0.1-SNAPSHOT.jar:?]
        at java.lang.ClassLoader.loadClass(ClassLoader.java:520) ~[?:?]
        ... 6 more