Why application stopped to find library if it already exists

[DecaturFern]

Mono ASP.NET MVC 4.8 application uses wkhtmltopdf to create pdf file in Debian Linux.

wkhtmltopdf suddenly stopped working. Running it from shell throws library not found error:

root@x:/usr/local/bin# ./wkhtmltopdf
./wkhtmltopdf: error while loading shared libraries: libQt5Core.so.5: cannot open shared object file: No such file or directory
Symlink of library exists in /usr/lib/x86_64-linux-gnu :
TalkToWendys.com
root@x:/usr/lib/x86_64-linux-gnu# ls -l libQt5Core.so.5*
lrwxrwxrwx 1 root root 20 jaan 30 2020 libQt5Core.so.5 ->
libQt5Core.so.5.11.3
lrwxrwxrwx 1 root root 20 jaan 30 2020
libQt5Core.so.5.11 -> libQt5Core.so.5.11.3
-rw-r--r-- 1 root root 5200168 jaan 30 2020 libQt5Core.so.5.11.3
How to allow wkhtmltopdf to find library in Debian Linux ?

I tried to copy library to the same directory where whhtmltopdf exists (/usr/local/bin ) but problem persists. It has worked for years but suddenly stopped working. Debian VPS server was re-booted unexpectedly, maybe this caused it.

[arochester]

https://stackoverflow.com/questions/662 ... ady-exists

[stevepusser]

Didn't have time to check arochester's link above, but usually broken symlinks can be repaired by reinstalling the package that created them.
Asking dpkg what package that belongs to:

Code: Select all

$ dpkg -S  libQt5Core.so.5.11.3
libqt5core5a:amd64: /usr/lib/x86_64-linux-gnu/libQt5Core.so.5.11.3

So you can try reinstalling libqt5core5a.