Issue with "Weights" screen blanking out after updating to HikaShop 6.4.0

Hi,

Thank you for the report. Could you help us understand a bit more about the issue?

When you mention the "Weights" screen, could you tell us exactly which page in HikaShop you are on when this happens? For example:
- Is it the product listing page in the backend (Products > Products)?
- Is it a configuration page (System > Configuration)?
- Or is it a specific category or section you've named "Weights"?

Also, when you mention "display quantity to 200", do you mean you've set the number of items per page to 200 in the listing?

A white/blank screen typically indicates a PHP memory limit or execution time issue. With 200 items per page, the server may run out of memory before the page can fully render. You could try:
1. Reducing the items per page to 50 or 100 to see if that resolves the issue
2. Increasing the PHP memory limit in your server configuration (e.g., `memory_limit = 512M`)
3. Checking your server's PHP error log for any fatal errors that would explain the blank screen

If you can share a screenshot of the page where this happens (before it goes blank) and tell us where you click on it to trigger the issue, that would help us pinpoint the exact issue.