flask's send_file parameter names have changed

[tcmoore3]

Description

As of flask version 2.2.0, the cache_timeout parameter of send_from_directory is removed. It was deprecated in favor of max_age in version 2.0.0. Hence, if using flask >= 2.2, any dashboard that uses the ImageViewer, FileList, or VideoViewer modules will not display the content of the cards as expected.

To reproduce

Run a dashboard that displays images where the flask version >= 2.2.

[bdice]

Thanks! If you can contribute a PR to fix this and bump the requirements to flask>=2, that'd be great.

[tcmoore3]

Thanks! If you can contribute a PR to fix this and bump the requirements to flask>=2, that'd be great.

Already on it!