Deploy the new relic of rails application, the log shows the invalid license key, how to modify the configuration?

  question, ruby

This server has been deployed with another application of the new relic license key.
When deploying a new application, debug log displays the license of another application being used.
The configuration code is as follows

common: &default_settings
 # Required license key associated with your New Relic account.
 license_key: '25905xxxxxxxxxxxxx04b6'
 
 # Your application name. Renaming here affects where data displays in New
 # Relic.  For more details, see https://docs.newrelic.com/docs/apm/new-relic-apm/maintenance/renaming-applications
 app_name: 'xxx sandbox'
 
 # To disable the agent regardless of other settings, uncomment the following:
 # agent_enabled: false
 
 # Logging level for log/newrelic_agent.log
 log_level: debug
 
 # Environment-specific settings are in this section.
 # RAILS_ENV or RACK_ENV (as appropriate) is used to determine the environment.
 # If your application has other named environments, configure them here.
 development:
 <<: *default_settings
 app_name: 'xxx (Development)'
 
 test:
 <<: *default_settings
 # It doesn't make sense to report to New Relic from automated test runs.
 monitor_mode: false
 
 staging:
 <<: *default_settings
 app_name: 'xxx (Staging)'

The output log is as follows (sometimes using the license in the configuration, sometimes using the license of another application)

[2017-04-27 22:24:55 -0700  sandbox.aviagames.com (1183)] DEBUG : Sending request to collector-213.newrelic.com:443/agent_listener/14/7424fbxxxxxxxxxxxxx4bd/get_agent_commands?  run_id=216855451632610815&marshal_format=json with POST
 [2017-04-27 22:24:55 -0700  sandbox.aviagames.com (1183)] DEBUG : Received response, status: 200, encoding: ''
 [2017-04-27 22:24:55 -0700  sandbox.aviagames.com (1183)] DEBUG : Received get_agent_commands = []
 [2017-04-27 22:24:55 -0700  sandbox.aviagames.com (1183)] DEBUG : No thread profiles with data found to send.
 [2017-04-27 22:24:55 -0700  sandbox.aviagames.com (1183)] DEBUG : EventLoop: Dispatching event 'report_event_data' with 1 callback(s).
 [2017-04-27 22:24:55 -0700  sandbox.aviagames.com (1183)] DEBUG : Sending analytic_event_data to New Relic Service
 [2017-04-27 22:24:55 -0700  sandbox.aviagames.com (1183)] DEBUG : EventLoop: Dispatching event 'reset_log_once_keys' with 1 callback(s).
 [2017-04-27 22:25:20 -0700  sandbox.aviagames.com (1103)] DEBUG : EventLoop: Dispatching event 'report_data' with 1 callback(s).
 [2017-04-27 22:25:20 -0700  sandbox.aviagames.com (1103)] DEBUG : Sending data to New Relic Service
 [2017-04-27 22:25:20 -0700  sandbox.aviagames.com (1103)] DEBUG : Sending 31 items to metric_data
 [2017-04-27 22:25:20 -0700  sandbox.aviagames.com (1103)] DEBUG : Sending request to collector-252.newrelic.com:443/agent_listener/14/25905dxxxxxxx04b6/metric_data?  run_id=201836671014945180&marshal_format=json with POST

The previous staff set the environment variable on this machine. newrelic uses the license equivalent in the environment variable in priority by default. The problem is solved after the environment variable is modified and the system is restarted.