The project doesn't open: Premiere pro 14.6

[#1]

1. I have to import every time my project to an other empty one to continue my work :(.

[#2]

1. I have to import every time my project to an other empty one to continue my work :(.

[#3]

FAQ: How to reset (trash) preferences.

FAQ: Clearing Cache Method Premiere Pro v14 « DAV's TechTable

[#4]

Thank you very much.

The "Clearing Cache Method"solved my problem ;).