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431
Request Header Fields Too Large
The server is unwilling to process the request because its header fields are too large.
Common Causes
- •Too many cookies
- •Large Authorization header
- •Excessive custom headers
Fix Solutions
Reduce header size
Clear unnecessary cookies or reduce header content.
Increase server limit
Configure server to accept larger headers if necessary.
Code Examples
# Increase header buffer size
large_client_header_buffers 4 32k;