title: Error : retrieved hash chain is invalid
body: <p>Whenever I attempt to run <code>geth</code> on the command line, it seems to have trouble syncing with the blockchain. I am getting these warnings continuously (this is run on testnet).</p>
  
  <pre><code>geth --testnet --rpc --rpcaddr "localhost" --rpccorsdomain "*" --rpcapi="db,eth,net,web3,personal,staker,net,txpool,shh " --rpcport 8545
  </code></pre>
  
  <p><a href="https://i.stack.imgur.com/FBXuZ.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/FBXuZ.png" alt=""></a></p>