How to Fix 504 Gateway Timeout Error in cPanel

Posted about 10 months ago 4.5k

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What 504 Gateway Timeout Means

Timeout: Upstream server didn't respond in time.

Common Causes

  • Slow PHP script
  • Database query timeout
  • Cloudflare proxy timeout
  • Server overload

Solutions

Increase PHP Execution Time

MultiPHP INI Editor → max_execution_time to 300 or higher.

Adjust Cloudflare Timeout

Cloudflare → Settings → Network → Increase response timeout.

Optimize Slow Queries

Use caching and database indexing.

Causes and Fixes Table

CauseSolution
PHP timeoutIncrease max_execution_time
Database slowOptimize queries/indexes
CloudflareIncrease proxy timeout
Heavy cronSchedule off-peak


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