Check that @config exists. Fixes #413#528

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calh wants to merge 4 commits intothiagopradi:masterfrom calh:nil_shard_config

+292-87

Commits on Jun 21, 2019

Setup a docker development environment
calh
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Commits on Jun 25, 2019

Commits on Jun 26, 2019

Check that @config exists. Fixes thiagopradi#413
calh
committed