LO does not run on Ubuntu 16.04

[Uwe Brauer]

Hi 

I am still on Ubuntu 16.04. 
After the installation of LO, 
/opt/libreoffice7.2/program/swriter 

I obtain 
opt/libreoffice7.2/program/soffice.bin: symbol lookup error: /opt/libreoffice7.2/program/libvclplug_gtk3lo.so: undefined symbol: gtk_widget_path_iter_set_object_name


I tried to follow the advice found in 

https://ask.libreoffice.org/t/installed-libreoffice-7-1-on-ubuntu-16-04-lts-it-does-not-start-and-i-get-the-following-error/61992/3

But it does not work

Any help would be appreciated

Regards

Uwe Brauer