Plugin Could Not Be Activated Because It Triggered a Fatal Error
Why WordPress says a plugin could not be activated because it triggered a fatal error, how to read the real PHP error and fix the cause.
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403 Forbidden Error in WordPress: Find What Is Blocking Access
How to find whether a 403 Forbidden error in WordPress comes from a firewall, a security plugin, .htaccess or file permissions.
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Cookies Are Blocked Due to Unexpected Output: WordPress Login Fix
Why the WordPress login says cookies are blocked due to unexpected output, and how to find the file and line that caused it.
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Missing a Temporary Folder in WordPress: What It Means and Fixes
Why WordPress uploads fail with “Missing a temporary folder” or “Failed to write file to disk”, and why WP_TEMP_DIR is not the fix.
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Installation Failed: Could Not Create Directory in WordPress
Why WordPress cannot create directories when installing plugins or themes, and how to fix permissions, ownership and leftover folders.
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Sorry, You Are Not Allowed to Access This Page: WordPress Fix
What “Sorry, you are not allowed to access this page” means in WordPress and how to fix roles, plugin pages and table prefix problems.
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ERR_TOO_MANY_REDIRECTS in WordPress: Find and Fix the Loop
Why WordPress sites get stuck in a redirect loop and how to find the two settings that disagree.
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Updating Failed. The Response Is Not a Valid JSON Response: Fix
Why the block editor says the response is not a valid JSON response, and how to find the real error behind it.
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Maximum Execution Time Exceeded in WordPress: How to Fix It
What the maximum execution time error means in WordPress, how to raise the limit safely, and when the real fix is elsewhere.
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WordPress Image Upload Error: The Server Cannot Process the Image
Why WordPress says the server cannot process the image, and how to find whether memory, the image library or a plugin is to blame.
