Checklist

• I have searched the existing issues for similar issues.
• I added a very descriptive title to this issue.
• I have provided sufficient information below to help reproduce this issue.

Summary

Error from prometheus when scraping /_stcore/metrics:
Error scraping target: unit "seconds" not a suffix of metrics "session_duration_seconds_total"

I believe the unit seconds should be at the end:
"session_duration_total_seconds"

Reproducible Code Example

Steps To Reproduce

1. Scrape /_stcore/metrics endpoint with prometheus
2. Check the error in prometheus > Status > Target health

Expected Behavior

Target health status in prometheus up.

Current Behavior

Target health status in prometheus down. Error scraping target: unit "seconds" not a suffix of metrics "session_duration_seconds_total"

Is this a regression?

• Yes, this used to work in a previous version.

Debug info

• Streamlit version: 1.55.0
• Python version: 3.13
• Operating System: linux
• Browser: chrome

Additional Information

No response