Problem when exporting TTP matrix in image and light mode

[Lhorus6]

Description

In a Report, exporting the MITRE matrix to an image does not work in light mode. It loads indefinitely.

When you open a report and look at the "Tactics matrix view", and click on export to image, it loads indefinitely.

In case the theme is "dark":

• Dark (with background) works
• Dark (without background) works
• Light (with background) does not work, it loads indefinitely
• Light (without background) does not work either

In case the theme is "light":

• Nothing worked

Environment

OCTI 6.3.11

Reproducible Steps

Steps to create the smallest reproducible scenario:

1. Create a report
2. Add dozens (at least 40) attack patterns (you can test on this report: https://testing.octi.staging.filigran.io/dashboard/analyses/reports/4ea0d59d-e02e-4d0c-aff4-3d8496fe6124)
3. Go to Knowledge > Tactics matrix view
4. Click on "export to image"
5. Choose one of the "Light" option

Expected Output

Get the image

Actual Output

Nothing, stuck on darkened screen

Additional information

This seems related to the number of Attack patterns contained in the report. I did some tests with few TTPs and the export worked