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stylus asked

How do I enable debug for FortiOS GUI pages?

If I see a blank page, or a page displays "Internal Server Error", how can I troubleshoot the problem?

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logographer answered

Enable debug for httpsd using the following commands:

diagnose debug enable
diagnose web-ui debug enable
diagnose debug app httpsd -1

To limit the output to errors only, issue the command:

diagnose debug app httpsd 0xe

More information for debugging is available:

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phantomscribe avatar image phantomscribe ♦♦ commented ·

When you see an http 500 error, open the browser debug console or enable debug on FortiOS to return the error details.

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