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Best answer by aparrish

@dharrison a 308 error in Lucidchart is usually related to a session or authentication issue.

Try logging out completely, closing your browser, and logging back in. If that doesn’t work, clear your cache/cookies or open the document in an incognito/private window. If it works there, the issue is likely a cached session or extension conflict.

Also make sure you’re consistently using the same login method (Google, Microsoft, or email/password), as mixed authentication can sometimes cause redirect errors.

If the issue continues, and this is a paid account, submitting a ticket to our Product Support team with a screenshot and the document URL will help them investigate further.

Amanda, Lucid Legend

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aparrish
Lucid Legend Level 8
aparrishLucid Legend Level 8Answer
Lucid Legend Level 8
February 21, 2026

@dharrison a 308 error in Lucidchart is usually related to a session or authentication issue.

Try logging out completely, closing your browser, and logging back in. If that doesn’t work, clear your cache/cookies or open the document in an incognito/private window. If it works there, the issue is likely a cached session or extension conflict.

Also make sure you’re consistently using the same login method (Google, Microsoft, or email/password), as mixed authentication can sometimes cause redirect errors.

If the issue continues, and this is a paid account, submitting a ticket to our Product Support team with a screenshot and the document URL will help them investigate further.

Amanda, Lucid Legend