Model card generation fails due to image too large

[hanneshapke]

Expected Behavior

Model card generation fails due to the histogram to large.

Actual Behavior

_draw_histogram calls figure_to_base64str.
The method calls fig.savefig(buf, bbox_inches='tight', format='png')

The save fails with

ValueError: Image size of 6440035x455 pixels is too large. It must be less than 2^16 in each direction.

[codesue]

Thanks for tracking this here, @hanneshapke!

Note: This was originally reported in the sig-tfx-addons Google Group. We're awaiting error logs and a reproducible example.

[codesue]

Still waiting on error logs and a reproducible example before this can be picked up.