Libre Office won't open

i'm not going to add anything to Jacob comment but just inserting some screenshots to help:

Open your file manager and go to your home(it will open there by default).

Show hidden file by pressing CTRL+h

Now you can find many hidden files/dirs search for that named .config

Now open that directory and search for directory called libreoffice

Now remove this dir by pressing Delete or rightclick --> Move to Trash

Now log out and log in again then try to open libroffice again

An additionally answer using terminal way:

Open a terminal with CtrlAltT and fire this command:

rm -r ~/.config/libreoffice

This command deletes the folder .config/libreoffice in your home folder ~, but not the folde .config itself ;)

Alternatively you could create a backup of the folder with:

mv ~/.config/libreoffice ~/.config/libreoffice_bak