While installing Libreoffice from Flathub, i had to suspend my PC for sometime and this abruptly ended the installation. When i tried to install again, it showed me an error message. Later when I tried to install PyCharm from the software center(Like before, the installation was interrupted misway in this case also), I got the same error message. If the installation completes without any interruptions, it will run fine. But if you once get an error during the installation of one app, apparently I can't install it anymore.
I'm getting the same issue even while trying to install on command line from flathub. My broadband is very unreliable so if there is a network error during any installation, as of now it means I can't install that app again on my system.(sorry I could'nt paste the error description here)