Getting the Blackfire logs

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Please include the following information in your issue

• Your platform (e.g. OSX x64, Debian wheezy x86, Ubuntu Precise x64, etc...)
• The output of php -v  command.
• The output of php -d display_startup_errors=on --ri blackfire  command.
• The output of blackfire-agent -v  command.
• The content of the Probe log file.
• The content of the Agent log file.

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Getting logs from Blackfire

Probe logs

1. Increase the Probe log level to debug by configuring it with blackfire.log_level=4   and blackfire.log_file=/tmp/blackfire.log  (refer to the Probe configuration for more information). 
2. ⚠️  Do not forget to restart the webserver or PHP-FPM to reload the configuration.
3. Profile your code again

Agent logs

Note: this does not apply to Magento Cloud and Platform.sh users, who can only get the probe logs.

1. Increase the Agent log level to debug by configuring it with log-level=4  (refer to the Agent configuration for more information). 
2. ⚠️  Do not forget to restart the Agent to reload its configuration.
3. Profile your code again
4. Get the logs:

• On Linux: default log files are in  /var/log/blackfire/agent.log 
• On macOS: default log files are in /usr/local/var/log/blackfire/agent.log  
• On Windows: simply copy/paste the console output.