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Feb 5, 2025 6:29 PM UTC
Solved

LucidChart Confluence onPrem Plugin: 400 Bad Request - Request header too large

Hello Folks, 

 

We are running Confluence DataCenter 8.5 with the Lucidchart plugin for Atlassian Confluence (v1.29.4) and are intermittently experiencing 400 Bad Request - Request header too large errors when attempting to load diagrams.  It is very intermittent.  I am logged into lucid in the same Chrome profile and validated the firewall test passes successfully. 

 

Kelsey Gaag
Lucidite
Feb 27, 2025 6:34 PM UTC

Hi ​@arun sampath, 

Thank you for the reply! It looks like this issue is caused by the “Rich Lucidchart viewer" setting for the plugin. Could you try turning the rich viewer off to see if that resolves the issue? 

Comments

Shantel Gillette
Lucid product team
Feb 6, 2025 6:16 PM UTC

Thank you for sharing this with us ​@smalleynorman_block,

I am going to have this post converted into a support ticket for some further investigation to understand what is happening. 

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Shantel Gillette
Feb 26, 2025 11:07 PM UTC

Any update on this error. I’m also facing same issue

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Kelsey Gaag
Lucidite
Feb 27, 2025 6:34 PM UTC

Hi ​@arun sampath, 

Thank you for the reply! It looks like this issue is caused by the “Rich Lucidchart viewer" setting for the plugin. Could you try turning the rich viewer off to see if that resolves the issue? 

Translate