Error messages when running scripts/start.sh mainnet

[alpereira7]

Following the documentation on Running a Validator node, https://docs.newrl.net/Validating/running-validator-node#start-the-node, I receive an error message:

newrlserver@server:~/newrl$ scripts/start.sh mainnet
Using mainnet constants
Traceback (most recent call last):
  File "/usr/lib/python3.8/runpy.py", line 194, in _run_module_as_main
    return _run_code(code, main_globals, None,
  File "/usr/lib/python3.8/runpy.py", line 87, in _run_code
    exec(code, run_globals)
  File "/home/newrl/newrl/app/main.py", line 16, in <module>
    from .codes.p2p.sync_chain import sync_chain_from_peers
  File "/home/newrl/newrl/app/codes/p2p/sync_chain.py", line 28, in <module>
    from app.codes.consensus.consensus import get_committee_consensus, validate_empty_block, validate_block_miner_committee, generate_block_receipt, \
  File "/home/newrl/newrl/app/codes/consensus/consensus.py", line 24, in <module>
    wallet_data = get_wallet()
  File "/home/newrl/newrl/app/codes/auth/auth.py", line 32, in get_wallet
    with open(AUTH_FILE_PATH, 'r') as f:
FileNotFoundError: [Errno 2] No such file or directory: 'data_mainnet/.auth.json'