Error loading dashboard on Firefox: NS_ERROR_OUT_OF_MEMORY

@MemriseSupport
Is this a new server problem from today or my firefox client?

651MB RAM are free and DuoLingo web portal works.

Error message:

NS_ERROR_OUT_OF_MEMORY: dashboard-286ad364b113.js:1
[10]</e.exports/f.getSavedFilter https://static.memrise.com/garden/dist/js/dashboard-286ad364b113.js:1:27465
[11]</</o.dashboard.CourseProgressFetcher https://static.memrise.com/garden/dist/js/dashboard-286ad364b113.js:1:28069
[8]</</o.dashboard.DashboardView<.initialize https://static.memrise.com/garden/dist/js/dashboard-286ad364b113.js:1:15025
Class</<.extend/i https://static.memrise.com/dist/js/libs-5623ac0a9113.js:1:267575
[8]</</< https://static.memrise.com/garden/dist/js/dashboard-286ad364b113.js:1:15237
[18]</t.exports/a.load https://static.memrise.com/dist/js/memrise-bundle-7b5d43e7c113.js:1:32280
[25]</t.exports/</< https://static.memrise.com/dist/js/memrise-bundle-7b5d43e7c113.js:1:42848
o/</h https://static.memrise.com/dist/js/libs-5623ac0a9113.js:1:38726
o/</f< https://static.memrise.com/dist/js/libs-5623ac0a9113.js:1:39042
i https://static.memrise.com/dist/js/libs-5623ac0a9113.js:1:438552

Working again after a browser restart.