net.sf.ehcache.CacheException: Error configuring from file:/C://ehcache.xml. Initial cause was Error configuring from input stream. Initial cause was null:295: Element does not allow attribute "maxElementsOnDisk".
net.sf.ehcache.CacheException: Failed to serialize element due to ConcurrentModificationException. This is frequently the result of inappropriately sharing thread unsafe object (eg. ArrayList, HashMap, etc) between threads