I am trying to simulate a network in omnet++, but everytime I try to run it's simulation it gives error that some module is not found while network initialization. Please someone help me out, it's really urgent.
You should check the IDE and Mobility models in OMNET++. First, develop the small network using the TIKTOK scenario and after that, you may develop the network as per your requirement.
Before starting your proposed simulation model, you need to verify the installation right after configuration (./configure) and (./make). To make it done, you need to follow the installation guide, provided by OMNet++.
https://doc.omnetpp.org/omnetpp/InstallGuide.pdf
Try a simple prepared sample such as Aloha, once you've done a successful installation. Here after you can find the command to try:
$ cd samples/aloha
$ ./aloha
You may find a TicToc tutorial using following link: