The error code may be related to the Python library ipopt, which is used for large-scale nonlinear optimization. It is an open-source library, released under the Eclipse Public License. If you encounter the error message, the first thing you need to do is to make sure the executable file is installed in the correct location.
In Python, it is possible to create a Pyomo model from a SOL file, which is then loaded into the Pyomo model. However, this method requires that you first create an SOL file. If you do not have a SOL file, you can import it using Pyomo.