What's wrong with my code?

Dear sir:
Here is my code. When I run the code, it is said that Blanchard & Kahn conditions are not satisfied: indeterminacy. How can I deal with it?
Note: Matlab version 2023b; Dynare version 5.5

code2.m (1.2 KB)
model.mod (2.8 KB)
Note: Please run the code2.m

Why is your C in steady state -60?

It is also my confusion. In fact, when I run the code.m, Css is equal to Yss and it is positive. But When I run the .mod, the result shows that C is negative.

Then there must be a mistake in your code. Try to find out why your analytical steady state does not solve the entered model equations. Pay particular attention to brackets.