libQt5Core.so.5: version `Qt_5.12' not found error

[anirudh_92]

Hi all,

I installed Qt 5.12.1 on Ubuntu 18.04. I am getting the following error when i try to run or debug one of my projects. I am working on this project from more than 2-3 months and everything was working fine until a couple of hours ago. However, other projects are building and running fine with this same version Qt 5.12. The program exits with only this message displayed on the application output window.

/path/to/Qt/project: /usr/lib/x86_64-linux-gnu/libQt5Core.so.5: version `Qt_5.12' not found (required by /path/to/Qt/project)

I cannot figure out the problem since it was working fine until some time ago. Any help will be greatly appreciated.

Thank you in advance.