Comment # 5 on bug 1121421 from 
2019-01-14 08:00:34 <3> linux(3575) [Ruby] yast/wfm.rb:253 Client
/mounts/mp_0001/usr/share/YaST2/clients/save_network.rb failed with 'undefined
method `hosts' for nil:NilClass' (NoMethodError).
Backtrace:
/mounts/mp_0001/usr/share/YaST2/modules/Host.rb:301:in `GetModified'
/mounts/mp_0001/usr/share/YaST2/modules/Host.rb:123:in `Write'
/mounts/mp_0001/usr/share/YaST2/lib/network/network_autoyast.rb:374:in
`configure_submodule'
/mounts/mp_0001/usr/share/YaST2/lib/network/network_autoyast.rb:147:in
`configure_hosts'
/mounts/mp_0001/usr/share/YaST2/lib/network/clients/save_network.rb:250:in
`configure_hosts'
/mounts/mp_0001/usr/share/YaST2/lib/network/clients/save_network.rb:268:in
`configure_lan'
/mounts/mp_0001/usr/share/YaST2/lib/network/clients/save_network.rb:276:in
`configure_target'
/mounts/mp_0001/usr/share/YaST2/lib/network/clients/save_network.rb:315:in
`save_network'
/mounts/mp_0001/usr/share/YaST2/lib/network/clients/save_network.rb:29:in
`main'
/mounts/mp_0001/usr/share/YaST2/clients/save_network.rb:32:in `<top
(required)>'
/mounts/mp_0001/usr/lib64/ruby/vendor_ruby/2.5.0/yast/wfm.rb:313:in `eval'
/mounts/mp_0001/usr/lib64/ruby/vendor_ruby/2.5.0/yast/wfm.rb:313:in
`run_client'
/mounts/mp_0001/usr/lib64/ruby/vendor_ruby/2.5.0/yast/wfm.rb:206:in
`call_builtin'
/mounts/mp_0001/usr/lib64/ruby/vendor_ruby/2.5.0/yast/wfm.rb:206:in
`call_builtin_wrapper'
/mounts/mp_0001/usr/lib64/ruby/vendor_ruby/2.5.0/yast/wfm.rb:195:in
`CallFunction'
/mounts/mp_0001/usr/share/YaST2/lib/installation/clients/network_finish.rb:65:in
`main'
/mounts/mp_0001/usr/share/YaST2/clients/network_finish.rb:2:in `<top
(required)>'
/mounts/mp_0001/usr/lib64/ruby/vendor_ruby/2.5.0/yast/wfm.rb:313:in `eval'
/mounts/mp_0001/usr/lib64/ruby/vendor_ruby/2.5.0/yast/wfm.rb:313:in
`run_client'
/mounts/mp_0001/usr/lib64/ruby/vendor_ruby/2.5.0/yast/wfm.rb:206:in
`call_builtin'
/mounts/mp_0001/usr/lib64/ruby/vendor_ruby/2.5.0/yast/wfm.rb:206:in
`call_builtin_wrapper'
/mounts/mp_0001/usr/lib64/ruby/vendor_ruby/2.5.0/yast/wfm.rb:195:in
`CallFunction'
/mounts/mp_0001/usr/share/YaST2/lib/installation/clients/inst_finish.rb:119:in
`block (2 levels) in write'
/mounts/mp_0001/usr/share/YaST2/lib/installation/clients/inst_finish.rb:94:in
`each'
/mounts/mp_0001/usr/share/YaST2/lib/installation/clients/inst_finish.rb:94:in
`each_with_index'
/mounts/mp_0001/usr/share/YaST2/lib/installation/clients/inst_finish.rb:94:in
`block in write'
/mounts/mp_0001/usr/share/YaST2/lib/installation/clients/inst_finish.rb:86:in
`each'
/mounts/mp_0001/usr/share/YaST2/lib/installation/clients/inst_finish.rb:86:in
`each_with_index'
/mounts/mp_0001/usr/share/YaST2/lib/installation/clients/inst_finish.rb:86:in
`write'
/mounts/mp_0001/usr/share/YaST2/lib/installation/clients/inst_finish.rb:66:in
`main'
/mounts/mp_0001/usr/share/YaST2/clients/inst_finish.rb:2:in `<top (required)>'
/mounts/mp_0001/usr/lib64/ruby/vendor_ruby/2.5.0/yast/wfm.rb:313:in `eval'
/mounts/mp_0001/usr/lib64/ruby/vendor_ruby/2.5.0/yast/wfm.rb:313:in
`run_client'
/mounts/mp_0001/usr/lib64/ruby/vendor_ruby/2.5.0/yast/wfm.rb:206:in
`call_builtin'
/mounts/mp_0001/usr/lib64/ruby/vendor_ruby/2.5.0/yast/wfm.rb:206:in
`call_builtin_wrapper'
/mounts/mp_0001/usr/lib64/ruby/vendor_ruby/2.5.0/yast/wfm.rb:195:in
`CallFunction'
/mounts/mp_0001/usr/share/YaST2/modules/ProductControl.rb:1336:in `RunFrom'
/mounts/mp_0001/usr/share/YaST2/clients/inst_autosetup.rb:452:in `main'
/mounts/mp_0001/usr/share/YaST2/clients/inst_autosetup.rb:488:in `<top
(required)>'
/mounts/mp_0001/usr/lib64/ruby/vendor_ruby/2.5.0/yast/wfm.rb:313:in `eval'
/mounts/mp_0001/usr/lib64/ruby/vendor_ruby/2.5.0/yast/wfm.rb:313:in
`run_client'
/mounts/mp_0001/usr/lib64/ruby/vendor_ruby/2.5.0/yast/wfm.rb:206:in
`call_builtin'
/mounts/mp_0001/usr/lib64/ruby/vendor_ruby/2.5.0/yast/wfm.rb:206:in
`call_builtin_wrapper'
/mounts/mp_0001/usr/lib64/ruby/vendor_ruby/2.5.0/yast/wfm.rb:195:in
`CallFunction'
/mounts/mp_0001/usr/share/YaST2/modules/ProductControl.rb:1336:in `RunFrom'
/mounts/mp_0001/usr/share/YaST2/modules/ProductControl.rb:1508:in `Run'
/mounts/mp_0001/usr/share/YaST2/lib/installation/clients/inst_worker_initial.rb:106:in
`main'
/mounts/mp_0001/usr/share/YaST2/clients/inst_worker_initial.rb:2:in `<top
(required)>'
/mounts/mp_0001/usr/lib64/ruby/vendor_ruby/2.5.0/yast/wfm.rb:313:in `eval'
/mounts/mp_0001/usr/lib64/ruby/vendor_ruby/2.5.0/yast/wfm.rb:313:in
`run_client'
/mounts/mp_0001/usr/lib64/ruby/vendor_ruby/2.5.0/yast/wfm.rb:206:in
`call_builtin'
/mounts/mp_0001/usr/lib64/ruby/vendor_ruby/2.5.0/yast/wfm.rb:206:in
`call_builtin_wrapper'
/mounts/mp_0001/usr/lib64/ruby/vendor_ruby/2.5.0/yast/wfm.rb:195:in
`CallFunction'
/mounts/mp_0001/usr/share/YaST2/lib/installation/clients/installation.rb:93:in
`main'
/mounts/mp_0001/usr/share/YaST2/clients/installation.rb:2:in `<top (required)>'
/mounts/mp_0001/usr/lib64/ruby/vendor_ruby/2.5.0/yast/wfm.rb:313:in `eval'
/mounts/mp_0001/usr/lib64/ruby/vendor_ruby/2.5.0/yast/wfm.rb:313:in
`run_client'
/mounts/mp_0001/usr/lib64/ruby/vendor_ruby/2.5.0/yast/wfm.rb:206:in
`call_builtin'
/mounts/mp_0001/usr/lib64/ruby/vendor_ruby/2.5.0/yast/wfm.rb:206:in
`call_builtin_wrapper'
/mounts/mp_0001/usr/lib64/ruby/vendor_ruby/2.5.0/yast/wfm.rb:195:in
`CallFunction'
/usr/lib/YaST2/bin/y2start:62:in `<main>'
2019-01-14 08:00:34 <3> linux(3575) [Ruby] yast/wfm.rb:276 Internal error.
Please report a bug report with logs.
Run save_y2logs to get complete logs.
Details: undefined method `hosts' for nil:NilClass
Caller:  /mounts/mp_0001/usr/share/YaST2/modules/Host.rb:301:in `GetModified'

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