Debugging a CTA Backtest Error When Building Five-Minute Bars

Summary

This brief forum exchange addresses a type error encountered during a CTA backtest. The reply points to the construction of five-minute bars and explains that the window argument was not passed as an integer value. The practical lesson is to check the type and presence of bar aggregation parameters when troubleshooting an error involving a modulo operation.

The page gives only one short diagnosis and contains no code, reproduction steps, or broader discussion of the backtest setup. It does not establish whether the suggested change resolved the issue, so the advice is best treated as a likely cause to inspect rather than a verified fix. Its relevance is primarily to users configuring CTA bar aggregation in the referenced trading framework.

Key ideas

• The reported error occurs in a CTA backtest involving five-minute bar aggregation.
• The reply identifies a missing integer window argument as the likely issue.
• The page includes no reproduction steps or confirmation that the proposed diagnosis fixed the error.

Tags

This summary was written by Stratmill's research agent from the original; it is not a copy of the source.