Ehcache Error Error N.s.e.store.disk.diskstoragefactory-disk write solution

23:53:44 ERROR n.s.e.store.disk.DiskStorageFactory - Disk Write of com.koal.**.**.**.**.**.***Impl$$EnhancerBySpringCGLIB$$5b782dcf.query****.2063333947 failed: 
java.io.NotSerializableException: com.koal.**.**.entity.**.helloDO

It is obvious that the problem with Hellodo is that there is no serialization of the image. Because Ehcache opens the cache to a physical movie, the object needs to be serialized, or an error is made.

<cache name="**-**-MethodsCache"
           maxElementsInMemory="10000"
           eternal="false"
           timeToIdleSeconds="1800"
           timeToLiveSeconds="3600"
           memoryStoreEvictionPolicy="LFU"
           overflowToDisk="true"
           maxElementsOnDisk="10000000"
           diskPersistent="false"
           diskExpiryThreadIntervalSeconds="120"
    />

Ehcache Error Error N.s.e.store.disk.diskstoragefactory-disk write solution