Dataprep Asset Error: Insufficient permission to save content

Hi everyone,

I‘am currently using the Dataprep Asset to import files. It worked all fine for some time, but now I‘m always getting an error when importing the file**. It says „Insufficient permission to save content.“** I tried it with different assets but that didn’t help. Also I tried it with assets that I‘ve been able to import before and now it isn‘t working anymore.
Do you guys know what the problem is and how to fix it? Thanks in advance.