This can have multiple causes,
The best way is to clean your userlibs folders and redownload the marketplace modules.
After that check if there are no muliple bouncy castle libs with different versions, if so clean them up so you have the latest version
The error message says Mendix can't download a Java dependency.
This could be because you are using a network that uses a proxy server. If this is the case, have a look at the documentation on how to set up your proxy settings for managed dependencies in Studio Pro.
https://docs.mendix.com/refguide/managed-dependencies/#proxy-settings
I hope this helps!