Fixed: Use ‘ConcurrentHashMap’ to avoid ‘ConcurrentModificationException’ (OFBIZ-11258) When trying to load components in their dependency order the ‘toBeLoadedComponents’ map is modified while being iterated over which is not safe for non-concurrent maps.
ofbiz/ofbiz-framework/trunk/framework/base/src/main/java/org/apache/ofbiz/base/container/ComponentContainer.java