server panics when trying to bookmark the same url twice

Data

• Shiori version: 1.8.0
• Database Engine: SQLite
• Operating system: ubuntu
• CLI/Web interface/Web Extension:

Describe the bug / actual behavior

When I bookmark https://pardalotus.tech/posts/2024-10-02-falsehoods-programmers-believe-about-dois/ I get an error:

JSON.parse: unexpected character at line 1 column 1 of the JSON data

I noticed that the browser devtools that the POST that the Shiori interface is doing resulted in a 502 Error from the server?

This has happened to me in the past with other URLs, but I haven't found a pattern in what the problem is. I think it may sometimes work, depending on whether I am archiving the URL or not?

Expected behavior

I expected the bookmark to be saved!

To Reproduce

Try to bookmark https://pardalotus.tech/posts/2024-10-02-falsehoods-programmers-believe-about-dois/

Screenshots

I included some above.

Notes

Add any other context about the problem here.