not able to run visual slam

[logeshkrishnan94]

I'm using ubuntu 18.04, after creating conda environment and installation using bash (install_all.sh), i'm getting the below error

Traceback (most recent call last):
File "run_slam.py", line 7, in
from core.model import VisualSLAM
File "/home/user/projects/SLAM/Graph-SLAM/visual_slam/core/model.py", line 4, in
from .optimizer import PoseGraph
File "/home/user/projects/SLAM/Graph-SLAM/visual_slam/core/optimizer.py", line 1, in
import g2o
ModuleNotFoundError: No module named 'g2o'