No respond when opening any LibreOffice Apps in Ubuntu 20.04

I install LibreOffice on UbuntuSoftware, version is 7.1.
A few weeks ago my LibreOffice is fine, until last week.
I don’t recall installing any new apps or change any settings of LibreOffice,
now no matter I double click the document or search from Activities then launch it,
no any respond. Not even with command line.

Any suggestions?

How - there are many (too many?) ways to install LibreOffice (from PPA, via snap, via flatpak, from libreoffice.org)

UbuntuSoftware, the built in App on Ubuntu

Probably wrong/incomplete information - Ubuntu 20.04 installs 6.4.7.2 by default as of today. You stated, that you have 7.1<whatever_exactly>. Hence you must have selected some special installation method (probably you have the snap package installed).

Try the following:

  • Open a terminal
  • Execute snap run libreoffice --safe-mode

Does LibreOffice start this way? If not, provide any error messages you may get on the terminal window

Thanks for the reply.
But no luck with command lines, not even safe mode, once I execute the command, the cursor on the console just keep on flashing. Until I hit ctrl + c