Error starting project

Hello, I am getting the below error while starting the project after upgrading it from 7.7.1 to 7.11. Can somebody help me on how to fix it? Exception in thread "main" java.lang.VerifyError: Uninitialized object exists on backward branch 209 Exception Details:   Location:     scala/collection/immutable/HashMap$HashTrieMap.split()Lscala/collection/immutable/Seq; @249: goto   Reason:     Error exists in the bytecode   Bytecode:     0000000: 2ab6 005b 04a0 001e b200 b3b2 00b8 04bd      
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