Crash when downloading images from web

[aleclee]

Bug description

Export crashes when downloading website image associated with URL embedded in chat

thread 'main' panicked at ~/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/rexit-2.0.1/src/ReAPI/images.rs:75:68:
called Result::unwrap() on an Err value: Os { code: 21, kind: IsADirectory, message: "Is a directory" }

• Would you like to work on a fix? [y/n]

To Reproduce

Steps to reproduce the behavior:

Run export with many URL references in chat

Expected behavior

Execution with image export completes without error

Environment

Raspbian trixie