An error has happened during application run. See exception log for details. Magento 2
Vinh Jacker | 03-17-2025
The topic today is one of the popular errors you will meet. As if the error message shows [“An error has happened during application run. See exception log for details. could not write error message to log. please use developer mode to see the message.” in Magento 2 when you have uploaded Magento CE latest version and want to install it on your server, so what should you do? Here is the right solution for you.
How to resolve: “An error has happened during application run. See exception log for details”
Please open the .htaccess from the root and comment out the first line:
SetEnv MAGE_MODE developer
If you still get any troubles, find this topic: Exception printing is disabled by default for security reasons Magento 2 ask for help by leaving a comment.
Jacker is the Chief Technology Officer (CTO) at Mageplaza, bringing over 10 years of experience in Magento, Shopify, and other eCommerce platforms. With deep technical expertise, he has led numerous successful projects, optimizing and scaling online stores for global brands. Beyond his work in eCommerce development, he is passionate about running and swimming.
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