ubuntu18 image not found

Hi,

Im trying to create a slice with ubuntu 18 image which is throwing an error saying :

“failed lease update- all units failed priming: Exception during create for unit: 799d5499-b9e9-4d44-b4eb-1a06703f61ea Playbook has failed tasks: Could not find image default_ubuntu_18#all units failed priming: Exception during create for unit: 799d5499-b9e9-4d44-b4eb-1a06703f61ea Playbook has failed tasks: Could not find image default_ubuntu_18#”

However when I list available images via “fablib.get_image_names()” I can see “default_ubuntu_18” as an available image.
Code I’m using to create the slice is from example notebook in fablib version 1.7 examples

“slice_name = ‘MySlice1’

#Create Slice
slice = fablib.new_slice(slice_name)

# Add node
node = slice.add_node(name=’Node1′,
site=’MAX’,
cores=4,
ram=16,
disk=100,
image=’default_ubuntu_18′)

#Submit Slice Request
slice.submit()
”

The same code works for “default_ubuntu_20″ however.

Looking forward to hearing soon.
Thanks.