How to Solve this problem as the picture Shows

Steady state
1

When I ran the model, there was always something wrong as the Matlab shew. I could not get the steady state.
Here is the code
un.mod (5.0 KB)

How Shall I solve them? Thank you!

2

Only do the exp()-substitution once the model works. You may want to go for auxiliary variables, see option 3 in
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