Traceback (most recent call last): File "/usr/lib/python3/dist-packages/defer/__init__.py", line 483, in _inline_callbacks result = gen.throw(excep) File "/usr/lib/python3/dist-packages/UpdateManager/backend/InstallBackendAptdaemon.py", line 92, in commit _("Installing updates…"), True) File "/usr/lib/python3/dist-packages/defer/__init__.py", line 483, in _inline_callbacks result = gen.throw(excep) File "/usr/lib/python3/dist-packages/UpdateManager/backend/InstallBackendAptdaemon.py", line 159, in _show_transaction yield trans.run() aptdaemon.errors.TransactionFailed: Transaction failed: The package system is broken The following packages have unmet dependencies: stacer: Depends: git but it is not installed