java.util.ConcurrentModificationException

[CSnowStack]

Call multiple threads at the same time

throws java.util.ConcurrentModificationException

My temporary solution

// ReferenceMapMemory.class,line 31
 referenceMap = Collections.synchronizedMap(new io.rx_cache2.internal.cache.memory.apache.ReferenceMap<String, Record>());
//replace with 
referenceMap =new ConcurrentHashMap<>();