Repeated errors when downloading charts

以下はご提供いただいた日本語文の英語訳です：

About the USA500

There have been repeated errors when downloading charts.

For swing trading purposes, I conduct backtesting using the 4-hour, daily, weekly, and monthly timeframes.

There are no issues during Japanese daytime hours, but at night (New York time), chart downloads often fail with errors.

There are no problems with minute-based charts like 1-minute and 5-minute, but errors frequently occur especially with the 4-hour and daily timeframes.

I also tested with cryptocurrencies (BTC and SOL) during the same time periods. Although there was a slight delay, no errors occurred and the charts were downloaded successfully.

Similar errors also occur with the SP500.

This is a critical issue because if charts cannot be downloaded properly depending on the time of day, backtesting becomes impossible.
Especially for major instruments like USA500 and SP500, this has a significant impact.

I will continue testing with other instruments and report the results.

必要に応じて、よりフォーマルまたはカジュアルに調整することもできますので、お知らせください。以下はご提供いただいた日本語文の英語訳です：

About the USA500

There have been repeated errors when downloading charts.

For swing trading purposes, I conduct backtesting using the 4-hour, daily, weekly, and monthly timeframes.

There are no issues during Japanese daytime hours, but at night (New York time), chart downloads often fail with errors.

There are no problems with minute-based charts like 1-minute and 5-minute, but errors frequently occur especially with the 4-hour and daily timeframes.

I also tested with cryptocurrencies (BTC and SOL) during the same time periods. Although there was a slight delay, no errors occurred and the charts were downloaded successfully.

Similar errors also occur with the SP500.

This is a critical issue because if charts cannot be downloaded properly depending on the time of day, backtesting becomes impossible.
Especially for major instruments like USA500 and SP500, this has a significant impact.

I will continue testing with other instruments and report the results.

必要に応じて、よりフォーマルまたはカジュアルに調整することもできますので、お知らせください。