plugin initialization failed

[trex108]

while writing in .pro it shows qcoreapplication not found lexical issue or preprocessor issue

tell me what to do

[koahnig]

@trex108

Hi and welcome in devnet forum

You need to give more information about your issue. Crystalball reading will not help much.
Additional information required:
OS?
Qt version?
Source code and original error message?

[trex108]

@trex108 Based on Qt 5.14.0 (GCC 5.3.1 20160406 (Red Hat 5.3.1-6), 64 bit)
linux
i installed the open source version,the time i installed it finished automatically without showing the finish button.

[trex108]

@koahnig

[Ashok Kumar]

include the Mingw compilers or any corresponding compilers while creating the project

[koahnig]

@trex108
As already indicated by @Ashok-Kumar you need to install a proper compiler for your installation.

However, do you have installed only Qt creator?
This is a develoment environement and you would need also Qt lib version.
Check if there is a MaintenanceTool application available in the Qt install folder. If yes, start it and install Qt version.
AFAIK you should be able also to install the proper compiler with the MaintenanceTool under linux.