Error report for Modelica.Blocks.Examples.RealNetwork1

Warning: in file 'C:\JModelica.org-1.13\install\ThirdParty\MSL\Modelica\Blocks\Math.mo':
At line 821, column 59:
Variable array index in equation can result in slow simulation time
Error: in file 'C:\Users\tove_021\AppData\Local\Temp\jmc3769854727939949832out\sources\Modelica.Blocks.Examples.RealNetwork1.mof':
Semantic error at line 0, column 0:
Index reduction failed
Error: in file 'C:\Users\tove_021\AppData\Local\Temp\jmc3769854727939949832out\sources\Modelica.Blocks.Examples.RealNetwork1.mof':
Semantic error at line 0, column 0:
The system is structurally singular. The following varible(s) could not be matched to any equation:
showValue3.showNumber

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