Can't import or export scene,mesh.. etc

[anoosh96]

Get the following, error when I try to run:
bpy.ops.import_scene.fbx(filepath=path)
OR
bpy.ops.export_scene.obj(filepath=path)

AttributeError: Calling operator "bpy.ops.export_scene.obj" error, could not be found

Please help
StackTrace:
Traceback (most recent call last):
File "/opt/python/lib/python3.6/site-packages/bpy_lambda/2.79/scripts/modules/addon_utils.py", line 331, in enable
mod = import(module_name)
ModuleNotFoundError: No module named 'io_scene_3ds'
Traceback (most recent call last):
File "/opt/python/lib/python3.6/site-packages/bpy_lambda/2.79/scripts/modules/addon_utils.py", line 331, in enable
mod = import(module_name)
File "/opt/python/lib/python3.6/site-packages/bpy_lambda/2.79/scripts/addons/io_scene_fbx/init.py", line 53, in
from bpy_extras.io_utils import (
ImportError: cannot import name 'orientation_helper'
Traceback (most recent call last):
File "/opt/python/lib/python3.6/site-packages/bpy_lambda/2.79/scripts/modules/addon_utils.py", line 331, in enable
mod = import(module_name)
File "/opt/python/lib/python3.6/site-packages/bpy_lambda/2.79/scripts/addons/io_anim_bvh/init.py", line 49, in
from bpy_extras.io_utils import (
ImportError: cannot import name 'orientation_helper'
Traceback (most recent call last):
File "/opt/python/lib/python3.6/site-packages/bpy_lambda/2.79/scripts/modules/addon_utils.py", line 331, in enable
mod = import(module_name)
File "/opt/python/lib/python3.6/site-packages/bpy_lambda/2.79/scripts/addons/io_mesh_ply/init.py", line 51, in
from bpy_extras.io_utils import (
ImportError: cannot import name 'orientation_helper'
Traceback (most recent call last):
File "/opt/python/lib/python3.6/site-packages/bpy_lambda/2.79/scripts/modules/addon_utils.py", line 331, in enable
mod = import(module_name)
File "/opt/python/lib/python3.6/site-packages/bpy_lambda/2.79/scripts/addons/io_scene_obj/init.py", line 49, in
from bpy_extras.io_utils import (
ImportError: cannot import name 'orientation_helper'
Traceback (most recent call last):
File "/opt/python/lib/python3.6/site-packages/bpy_lambda/2.79/scripts/modules/addon_utils.py", line 331, in enable
mod = import(module_name)
File "/opt/python/lib/python3.6/site-packages/bpy_lambda/2.79/scripts/addons/io_scene_x3d/init.py", line 47, in
from bpy_extras.io_utils import (
ImportError: cannot import name 'orientation_helper'
Traceback (most recent call last):
File "/opt/python/lib/python3.6/site-packages/bpy_lambda/2.79/scripts/modules/addon_utils.py", line 331, in enable
mod = import(module_name)
File "/opt/python/lib/python3.6/site-packages/bpy_lambda/2.79/scripts/addons/io_mesh_stl/init.py", line 63, in
from bpy_extras.io_utils import (
ImportError: cannot import name 'orientation_helper'
Exception in module register(): '/opt/python/lib/python3.6/site-packages/bpy_lambda/2.79/scripts/addons/io_curve_svg/init.py'
Traceback (most recent call last):
File "/opt/python/lib/python3.6/site-packages/bpy_lambda/2.79/scripts/modules/addon_utils.py", line 350, in enable
mod.register()
File "/opt/python/lib/python3.6/site-packages/bpy_lambda/2.79/scripts/addons/io_curve_svg/init.py", line 70, in register
bpy.types.TOPBAR_MT_file_import.append(menu_func_import)
AttributeError: 'RNA_Types' object has no attribute 'TOPBAR_MT_file_import'