Aproveitando... realmente pra mim é um grande problema também, faço o backup do projeto e ao restaurar as fontes adicionadas antes não retornam! Fica um alerta máximo a equipe Incomedia para nos ajudar nisso - deve ser fácil eles inserirem no backup.

Hello Pratik

In this case specifically, it means that the fonts file of the project got corrupted and is now unusable.

The only way to restore the project's functionality is to go to that path and delete the fonts.xml file. Once you do that, you will have to link all fonts to the projects again which shouldn't take much time and the issue should be gone then

Please try this out and let me know if it worked

Thank you

Stefano