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How to fix environment errors
  1. 1.
    ✘ Please change chain-data folder permission to 777.
    • Add permission to the chain-data folder by following the instructions in the Start a Node section point #2.
  2. 2.
    ✘ Please install NTP Time Server or reconfigure your NTP Time Server.
  3. 3.
    ✘ Please install lsof or open your node port 9944.
    • Install lsof by following the commands:
      sudo apt-get update -y
      sudo apt-get install -y lsof
    • Check docker container opened ports by following the command:docker ps
    • Recreate the docker container by following the instructions in the Start a Node section point #6.
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