# Error? I don\`t know how to fix please help

**URL:** <https://forum.dynare.org/t/error-i-don-t-know-how-to-fix-please-help/24582>\
**Category:** Stochastic simulations\
**Created:** [22 November 2023 21:28 UTC](https://forum.dynare.org/t/error-i-don-t-know-how-to-fix-please-help/24582 "2023-11-22T21:28:55Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![mmeneghello](https://forum.dynare.org/letter_avatar_proxy/v4/letter/m/9f8e36/32.png) [@mmeneghello](https://forum.dynare.org/u/mmeneghello)\
**Post date:** [22 November 2023 21:28 UTC](https://forum.dynare.org/t/error-i-don-t-know-how-to-fix-please-help/24582/1 "2023-11-22T21:28:55Z")

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If anyone knows how to help, me and my friends are writing a code, and I keep getting this error and it doesn’t run, very new to dynare and I don`t know how to fix. If someone could help me out please do. Thank you very much for your time.

> > dynare RBC\_carbon.mod  
> > Starting Dynare (version 5.4).  
> > Calling Dynare with arguments: none  
> > Starting preprocessing of the model file …  
> > ERROR: RBC\_carbon.mod: line 77, cols 1-6: syntax error, unexpected NAME

Error using dynare  
Dynare: preprocessing failed

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**Author:** ![jpfeifer](https://forum.dynare.org/user_avatar/forum.dynare.org/jpfeifer/32/5044_2.png) [@jpfeifer](https://forum.dynare.org/u/jpfeifer)\
**Post date:** [22 November 2023 21:40 UTC](https://forum.dynare.org/t/error-i-don-t-know-how-to-fix-please-help/24582/2 "2023-11-22T21:40:50Z")

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Without the file it is impossible to tell. But it may be a missing semicolon at the end of the previous line.

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**Author:** ![mmeneghello](https://forum.dynare.org/letter_avatar_proxy/v4/letter/m/9f8e36/32.png) [@mmeneghello](https://forum.dynare.org/u/mmeneghello)\
**Post date:** [23 November 2023 13:59 UTC](https://forum.dynare.org/t/error-i-don-t-know-how-to-fix-please-help/24582/3 "2023-11-23T13:59:11Z")

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Here`s the full code professor. We are currently struggling with making omega1 between 0.05 and 1, I was hoping to find out how it can be done. Thank you so much for your time! If I need to send the file itself I can do that also.

```auto
%% RBC model - All 
%% By Ghassane Benmir, October 2023

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% First declare all the endogenous variables: 
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

var 
    c % Consumption  
    l % Labour
    g % Government Spending
    t % Taxes/Transfers
    w % Wages
    y % Output 
    rF % Risk free rate 
    b % Bonds supply
    lambda % The lagrangian with respect to consumption and savings (bonds) - also represents the marginal utility of consumption
    e_a % The shock variable within the law of motion to output
    em % Emissions
    miu % Abatement
    ctax % Carbon tax

;  

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% Second declare all the exogenous variables: 
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
varexo 
    eta_a % The exogenous output shock
;                          

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% Third declare all the parameters : 
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

parameters 
    beta
    alpha
    delta
    chi
    phi
    l0 
    y0 
    b0 
    g0
    sdev_a 
    sig_a 
    rho_a 
    sdev_g
    sig_g
    rho_g 
    sdev_b
    sig_b
    rho_b 
    phi_em
    omega1
    omega2
;

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% Third (bis) calibration for all the params 
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

beta = 0.9959; % Time preference 
alpha = 1/3; % Share of capital income
chi = 12; % Level of disutility (we calibrate it such that we have l=1/3 at the Steady state)
phi = 1; % Frisch elasticity of labour disutility
l0 = 1/3; % Hours worked (1/3 of 24h a day)
y0 = 1; % Exogenous Income or GDP  
b0 = 0; % Fixed supply of bonds (Net-zero supply)
g0 = .3; % Gog spending as % of GDP (30% here)
sdev_a = .01; % Standard deviation of the exogenous shock to income
rho_a = .9; % The shock persistence level
sig_a = 1; % The signe of the shock (1 if positive, -1 is negative)
phi_em = 0.3; % emission intensity
omega1 = 0.1; % abatement cost parameter 1
omega2 = 2.7; % abatement cost parameter 2

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% Fourth delcare your model (i.e. the FOCs and Equations of the model) 
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

model;  

%%%% Households Side %%%%

[name='FOC w.r.t to b: Euler Equation']
lambda = rF(+1)*beta*lambda(+1);

[name='FOC w.r.t to c: Marginal Utility of Consumption']
c = 1/lambda;

[name='FOC w.r.t to l: Disutility of labour']
w = chi*l^phi/lambda;

[name='Consumer Budget Constraint']
b = rF(-1)*b(-1) + w(-1)*l(-1) - t(-1) - c(-1); 
% y = c + i + g ; % (this is the same equation)

%%%% Firms Side %%%%

[name='Emission abatement']
em = (1-miu)*phi*y;

[name='FOC w.r.t l']
w = (1-alpha)*e_a*l^(-alpha);

[name='FOC w.r.t miu']
phi_em = -(omega1*omega2*(miu^(omega2-1)));

[name='FOC w.r.t em']
ctax = 1;

%%%% Government Spending %%%%

[name='Gov Spending']
g = g0*y;

[name='Gov Budget Constraint']
g = t ;

%%%% Market Clearing conditions (to close the model)

[name='Supply of bonds']
b = b0 ;

%%%% Exogenous shock law of motion %%%%

[name='Law of motion of the output shock']
log(e_a) = rho_a*log(e_a(-1)) +sig_a*eta_a;

end;

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% Fifth delcare your steady state 
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

steady_state_model;

e_a = 1 ;

%% Analytically without a solver (uncomment all the lines but comment the solver line)
% l = l0 ;
% b = b0 ;
% rF = 1/beta;
% rK = 1/beta - (1-delta) ;
% k_y = alpha/rK ;
% y = (e_a*k_y^(alpha)*l^(1-alpha))^(1/(1-alpha)) ;
% w = (1-alpha)*y/l ;
% k = alpha*y/rK ;
% i = delta*k;
% g = g0*y;
% t = g ;
% c = y - i - g ;
% lambda = 1/c ;
% q = lambda ; 
% chi = w*lambda/l^phi ; % % This to make sure l = 1/3 at the steady state

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% Sixth conduct all the checks (Residual, Blanchard-Khan ...) 
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
steady; % Provides you with the steady states values
resid(1); % Allow you to check if you computed correctly the steady states equations
check; % Checks the Blanchard Khan conditions to see if the model is well set

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% Seventh declare the shocks 
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

shocks;

var eta_a; stderr sdev_a ; 

end;

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% Eight performe the simulation 
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

stoch_simul (order=1, pruning, irf=30) c t y l lambda rF em miu ctax w ;

```

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<div class="post-metadata">

**Author:** ![DoubleBass](https://forum.dynare.org/user_avatar/forum.dynare.org/doublebass/32/17420_2.png) [@DoubleBass](https://forum.dynare.org/u/DoubleBass)\
**Post date:** [24 November 2023 08:26 UTC](https://forum.dynare.org/t/error-i-don-t-know-how-to-fix-please-help/24582/5 "2023-11-24T08:26:51Z")

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Could it be that you are missing some operators like \* in your equations? For instance in your first equation there are obviously some \*'s missing but also in your Emission abatement equation. Carefully check all of your equations.

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**Author:** ![jpfeifer](https://forum.dynare.org/user_avatar/forum.dynare.org/jpfeifer/32/5044_2.png) [@jpfeifer](https://forum.dynare.org/u/jpfeifer)\
**Post date:** [24 November 2023 12:30 UTC](https://forum.dynare.org/t/error-i-don-t-know-how-to-fix-please-help/24582/6 "2023-11-24T12:30:52Z")

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You are missing the `end` of the `steady_state_model`-block. If you fix that, will get various problems. Foremost is the wrong number of equations.  
[rbc\_test.mod](https://forum.dynare.org/uploads/short-url/3G1TafGT9oVfMtfVbRqRTfVartp.mod) (5.1 KB)
