Can't see any error messages there.
You can manually re-run the update process and set it to record the results to text files.
If you post the text files back here it might show what is happening.
To do this, open a terminal by pressing 'Ctrl' 'Alt' and 'T' keys together.
In the terminal window, type or paste in
sudo apt-get update | tee ~/"$(date +"%Y_%m_%d_%T")-apt-get-update.txt"followed by return/enter.
Then
sudo apt-get upgrade | tee ~/"$(date +"%Y_%m_%d_%T")-apt-get-upgrade.txt"followed by return/enter.
Enter your password if asked and answer any prompts with 'y'.
Running those commands should create two files called apt-get-update.txt and apt-get-upgrade.txt in your home directory.
The filenames will be prefixed with date and time information.
You can open them to check what they contain.
Check the file size is below the attachment limit and post back attaching the two files.
