Kameid
Zotero + LibreOffice (Linux/Ubuntu based distros) - Credits toTrying to solve the problem where the Zotero plugin doesn't work properly in the Linux LibreOffice Writer:
Guide:
1. Uninstall Zotero
2. Make sure you have a Java Runtime Environment installed. In LibreOffice, go to Tools>Options>Advanced. Make sure you have the "Use Java runtime environment" box checked, and if there is a JRE installed. If there isn't one, open terminal and install the latest JRE:
sudo apt install openjdk-8-jre
3. Check if your installation worked. Run:
java -version
Output:
4. Restart LibreOffice
5. install libreoffice-java-common:
sudo apt install libreoffice-java-common
6. Install Zotero
It should work fine now:
Credits to Kameid
Zotero's post about the troubleshooting process for the word processor plugin.