Hello Ειρήνη! My name is Abdullah, and I will assist you today.
I am sorry to know that you are experiencing this issue. It seems that the file is in use which may prevent it from being copied. Please follow the steps given below:
- Disconnect your phone from your computer and restart your phone.
- Restart your computer and connect your phone.
- Try to copy and paste the file in question and see how it goes.
Thank you.
Best,
Abdullah