I met the same problem,and the reason is there are two gora-core-xx.jar,one is 0.2.1 and the other is 0.3,remove the old one from your lib ,make it!
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I met the same problem,and the reason is there are two gora-core-xx.jar,one is 0.2.1 and the other is 0.3,remove the old one from your lib ,make it!
[email protected]