Have you had any fail in the last year or year and a half that happened specifically because of your fault?

Yes, there was an instance when due to my inattention, incorrect data appeared in a Power BI report. I misconfigured the filter, which caused extra categories to be displayed in the visualization. This led to incorrect conclusions by users.

After discovering the error, I:

• Quickly fixed the filter and updated the report.
• Conducted additional testing of all filters and visualizations.
• Introduced a peer-review stage into the report verification process to reduce the risk of similar errors in the future.

This experience taught me to check filtering logic more carefully and the importance of testing before publication.