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java.lang.NullPointerException: null at org.ethereum.trie.TrieImpl.delete(TrieImpl.java:298)[ethereumj-core-1.3.0-RC7-RELEASE.jar:na] at org.ethereum.trie.TrieImpl.insertOrDelete(TrieImpl.java:215)[ethereumj-core-1.3.0-RC7-RELEASE.jar:na] at org.ethereum.trie.TrieImpl.update(TrieImpl.java:145)[ethereumj-core-1.3.0-RC7-RELEASE.jar:na] at org.ethereum.trie.SecureTrie.update(SecureTrie.java:25)[ethereumj-core-1.3.0-RC7-RELEASE.jar:na] at org.ethereum.trie.SecureTrie.delete(SecureTrie.java:30)[ethereumj-core-1.3.0-RC7-RELEASE.jar:na] at org.ethereum.db.ContractDetailsImpl.put(ContractDetailsImpl.java:75)[ethereumj-core-1.3.0-RC7-RELEASE.jar:na] at org.ethereum.db.ContractDetailsCacheImpl.commit(ContractDetailsCacheImpl.java:163)[ethereumj-core-1.3.0-RC7-RELEASE.jar:na] at org.ethereum.db.RepositoryTrack.commit(RepositoryTrack.java:339)[ethereumj-core-1.3.0-RC7-RELEASE.jar:na] at org.ethereum.core.BlockchainImpl.applyBlock(BlockchainImpl.java:830)[ethereumj-core-1.3.0-RC7-RELEASE.jar:na] at org.ethereum.core.BlockchainImpl.processBlock(BlockchainImpl.java:797)[ethereumj-core-1.3.0-RC7-RELEASE.jar:na] at org.ethereum.core.BlockchainImpl.add(BlockchainImpl.java:523)[ethereumj-core-1.3.0-RC7-RELEASE.jar:na] at org.ethereum.core.BlockchainImpl.tryToConnect(BlockchainImpl.java:405)[ethereumj-core-1.3.0-RC7-RELEASE.jar:na] at org.ethereum.sync.SyncManager.produceQueue(SyncManager.java:238)[ethereumj-core-1.3.0-RC7-RELEASE.jar:na] at org.ethereum.sync.SyncManager.access$200(SyncManager.java:35)[ethereumj-core-1.3.0-RC7-RELEASE.jar:na] at org.ethereum.sync.SyncManager$4$1.run(SyncManager.java:130)[ethereumj-core-1.3.0-RC7-RELEASE.jar:na] at java.lang.Thread.run(Thread.java:745)[na:1.8.0_101]