core/homeassistant/components/epion/strings.json

{
  "config": {
    "abort": {
      "already_configured": "[%key:common::config_flow::abort::already_configured_device%]"
    },
    "step": {
      "user": {
        "data": {
          "api_key": "[%key:common::config_flow::data::api_key%]"
        }
      }
    },
    "error": {
      "invalid_auth": "[%key:common::config_flow::error::invalid_auth%]",
      "cannot_connect": "[%key:common::config_flow::error::cannot_connect%]"
    }
  }
}