StaleObjectStateException

[amruta19-dev]

org.hibernate.StaleObjectStateException: Row was updated or deleted by another transaction (or unsaved-value mapping was incorrect): [com.dailycodework.dreamshops.model.Cart#1]
at org.hibernate.event.internal.DefaultMergeEventListener.entityIsDetached(DefaultMergeEventListener.java:426) ~[hibernate-core-6.6.13.Final.jar:6.6.13.Final]
at org.hibernate.event.internal.DefaultMergeEventListener.merge(DefaultMergeEventListener.java:214) ~[hibernate-core-6.6.13.Final.jar:6.6.13.Final]
at org.hibernate.event.internal.DefaultMergeEventListener.doMerge(DefaultMergeEventListener.java:152) ~[hibernate-core-6.6.13.Final.jar:6.6.13.Final]
at org.hibernate.event.internal.DefaultMergeEventListener.onMerge(DefaultMergeEventListener.java:136) ~[hibernate-core-6.6.13.Final.jar:6.6.13.Final]
at org.hibernate.event.internal.DefaultMergeEventListener.onMerge(DefaultMergeEventListener.java:89) ~[hibernate-core-6.6.13.Final.jar:6.6.13.Final]
at org.hibernate.event.service.internal.EventListenerGroupImpl.fireEventOnEachListener(EventListenerGroupImpl.java:127) ~[hibernate-core-6.6.13.Final.jar:6.6.13.Final]
at org.hibernate.internal.SessionImpl.fireMerge(SessionImpl.java:854) ~[hibernate-core-6.6.13.Final.jar:6.6.13.Final]
at org.hibernate.internal.SessionImpl.merge(SessionImpl.java:840) ~[hibernate-core-6.6.13.Final.jar:6.6.13.Final]
at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:103) ~[na:na]
at java.base/java.lang.reflect.Method.invoke(Method.java:580) ~[na:na]
at org.springframework.orm.jpa.ExtendedEntityManagerCreator$ExtendedEntityManagerInvocationHandler.invoke(ExtendedEntityManagerCreator.java:364) ~[spring-orm-6.2.6.jar:6.2.6]
at jdk.proxy2/jdk.proxy2.$Proxy118.merge(Unknown Source) ~[na:na]
at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:103) ~[na:na]
at java.base/java.lang.reflect.Method.invoke(Method.java:580) ~[na:na]
at org.springframework.orm.jpa.SharedEntityManagerCreator$SharedEntityManagerInvocationHandler.invoke(SharedEntityManagerCreator.java:320) ~[spring-orm-6.2.6.jar:6.2.6]

This is happening in recent spring boot version
as for initializingCartId , getCart and other places in same transaction save has been called multiple times