Internal Error When Viewing XHProf Flamegraph

[s5k]

Hello, first off, thank you for this amazing tool! I'm new to Buggregator and really appreciate the value it brings to debugging workflows.

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Issue

When profiling requests using XHProf, some requests render the flamegraph correctly. However, for others—particularly those involving Magento cache clearing—I encounter an internal error when Buggregator tries to fetch the flamegraph.

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🔗 Failing Endpoint

GET http://localhost:8000/api/profiler/0197a648-7d00-72e0-9833-74ae66685db8/flame-chart

🧵 Error Response

{
  "message": "Content must be a resource stream or stringable type, but bool passed",
  "code": 500
}

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⚙️ Environment

• Tool: Buggregator dev/stable version
• Profiler: XHProf
• Framework: Magento 2
• Request Type: POST/GET with cache-clearing behavior
• Localhost Port: 8000
• Profiling package: spiral-packages/profiler

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🧪 Reproduction Steps

1. Perform a request in Magento that clears cache (e.g., config save or cache flush).
2. Attempt to view the flamegraph in Buggregator.
3. Observe 500 error response from /api/profiler/.../flame-chart.

[kasparsd]

I'm getting the same thing with XHProf on PHP 8.2. Both call graph and top functions for the same trace render fine.

The actual error in the logs is:

{"level":"error","ts":1751108680181370465,"logger":"app","msg":"InvalidArgumentException: Content must be a resource stream or stringable type, but bool passed in /app/vendor/spiral/framework/src/Storage/src/Bucket/WritableTrait.php at line 48 [] []\n"}

[butschster]

Hey @s5k

Sorry for the long response. Could you provide your XHProf profile. You can store it into a file and send it to me