I have a single node testnet running, but cleos wallet create returns an error. 
Has anybody else gotten this, and fixed it? I've tried reinstalling all of eosio, and all of the tests (36/36) pass.
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Note: it still worked with 1.0.8, but failed with 1.0.10. – Gassa Jul 18 '18 at 10:57
Try adding this flag when running nodeos: --http-validate-host=false or add it to your config.ini, and don't forget to restart keosd
