PrestaShop Documentation, PrestaShop Tutorials

PrestaShop blank screen after back-office login

Experiencing a blank screen after logging into the PrestaShop back office can be frustrating, but there are several potential causes and solutions to consider. Here are some troubleshooting steps you can take to address this issue:

  1. Clear cache: Start by clearing the cache files of your PrestaShop installation. Navigate to the “var/cache” directory in your PrestaShop installation and delete all the files within it. This action will force PrestaShop to regenerate the cache files when you access the back office again.
  2. Check error logs: Look for any error logs generated by PrestaShop. Check the “var/logs” directory in your PrestaShop installation for any log files that might provide clues about the problem. Look for any specific error messages that can help identify the cause of the blank screen.
  3. Disable non-essential modules: It’s possible that a module installed in your PrestaShop installation is causing a conflict or error, leading to the blank screen. Disable all non-essential modules by renaming the “modules” directory in the root of your PrestaShop installation. Create a new empty “modules” directory, and then try accessing the back office again. If the blank screen issue is resolved, you can re-enable the modules one by one to identify the problematic module.
  4. Switch to the default theme: If the issue persists, try switching to the default theme provided by PrestaShop. Navigate to the “themes” directory in your PrestaShop installation and rename your current theme folder. Then, access the back office again and see if the blank screen issue is resolved. If it is, the problem might be with your theme, and you can investigate further or contact the theme developer for assistance.
  5. Increase PHP memory limit: If your PrestaShop installation has a low PHP memory limit, it can lead to issues like blank screens. Open your “php.ini” file and increase the “memory_limit” directive to a higher value. For example, set it to “256M” or “512M”. Save the changes and restart your web server. Then, try accessing the back office again.
  6. Debug mode: Enable PrestaShop’s debug mode to get more detailed error messages. Open the “config/” file in your PrestaShop installation and locate the “define(‘PS_MODE_DEV‘, false);” line. Change the value to “true” to enable debug mode. Save the file and try accessing the back office again. This should display any error messages directly on the screen, providing more information about the issue.
  7. Contact support: If none of the above steps resolve the blank screen issue, it may be necessary to reach out to PrestaShop’s official support or seek assistance from the PrestaShop community forums. Provide them with detailed information about your PrestaShop version, any recent changes you made, and the steps you’ve taken to troubleshoot the issue.

Remember to always back up your PrestaShop files and database before making any changes, and exercise caution when modifying files or directories in your installation.

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