“Another update is currently in progress”
Severity: Minor · Fix time: Under 5 min · Skill level: Beginner"Another update is currently in progress" is a WordPress error message that appears in the Updates section of the dashboard when WordPress believes an update is already running — and therefore won't allow a new one to start...
“Briefly unavailable for scheduled maintenance. Check back in a minute.”
Severity: Major · Fix time: Under 5 min · Skill level: Beginner"Briefly unavailable for scheduled maintenance...
“Sorry, you are not allowed to access this page”
Severity: Major · Fix time: 5–15 min · Skill level: Intermediate"Sorry, you are not allowed to access this page" is a WordPress application-level capability check failure — not a server-generated 403, but a denial generated by WordPress itself when a logged-in user attempts to reach an admin page their current role doesn't permit...
“There has been a critical error on this website”
Severity: Critical · Fix time: 15–60 min · Skill level: Intermediate"There has been a critical error on this website" is a WordPress error message introduced in version 5...
“This block contains unexpected or invalid content”
Severity: Minor · Fix time: Under 5 min · Skill level: Beginner"This block contains unexpected or invalid content" is a Gutenberg block editor error that appears when WordPress cannot validate a block's stored HTML against the block's current definition...
2FA
Two-factor authentication (2FA) is a security process that requires users to verify their identity using two distinct methods before gaining access to an account or system...
405 Method Not Allowed
Severity: Major · Fix time: 15–60 min · Skill level: Intermediate405 Method Not Allowed is an HTTP status code that tells you the server found the URL you requested but refused to process the HTTP method — POST, PUT, DELETE, or PATCH — used to make the request...
Auto-Update Failure
Severity: Minor · Fix time: 5–15 min · Skill level: IntermediateAuto-Update Failure occurs when WordPress's background update system — which silently installs minor core releases, plugin updates, and theme updates without requiring manual action — fails to complete...
Broken permalinks
Severity: Major · Fix time: Under 5 min · Skill level: BeginnerBroken permalinks in WordPress is a condition where every post, page, or category URL returns a 404 error even though the content exists in the database...
Cannot Modify Header Information (pluggable.php)
Severity: Major · Fix time: 5–15 min · Skill level: IntermediateThe Cannot Modify Header Information (pluggable...
