as title says i am facing issue while installing mana-toolkit
when i run command apt-get install mana-toolkit
its says me this
Reading package lists... Done
Building dependency tree
Reading state information... Done
Package mana-toolkit is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or
is only available from another source
E: Package 'mana-toolkit' has no installation candidate
download.jpg
pls help me to solve this so i can continue learning
