Running examples in ‘AgroReg-Ex.R’ failed
The error most likely occurred in:

> base::assign(".ptime", proc.time(), pos = "CheckExEnv")
> ### Name: coloredit_arrange
> ### Title: Change the colors of a graph from the plot_arrange function
> ### Aliases: coloredit_arrange
> 
> ### ** Examples
> 
> library(AgroReg)
> data("aristolochia")
> attach(aristolochia)
> a=LM(trat,resp)

$Coefficients
            Estimate Std. Error   t value     Pr(>|t|)
(Intercept)   -52.50  8.0436071 -6.526922 6.166973e-09
trat            3.54  0.3095986 11.434161 2.398736e-18

$values
  Parameter    values
1 X Maximum  35.00000
2 Y Maximum  71.40000
3 X Minimum  15.00000
4 Y Minimum   0.60000
5       AIC 706.93212
6       BIC 714.07820
7 r-squared   0.63000
8      RMSE  19.33443

$VIF
[1] NA

[[4]]

> b=LL(trat,resp,npar = "LL.3")
$Coefficients

Model fitted: Log-logistic (ED50 as parameter) with lower limit at 0 (3 parms)

Parameter estimates:

               Estimate Std. Error t-value   p-value    
b:(Intercept) -19.40819    7.22347 -2.6868  0.008834 ** 
d:(Intercept)  63.94663    2.65919 24.0474 < 2.2e-16 ***
e:(Intercept)  23.57567    0.70284 33.5436 < 2.2e-16 ***
---
Signif. codes:  0 ‘***’ 0.001 ‘**’ 0.01 ‘*’ 0.05 ‘.’ 0.1 ‘ ’ 1

Residual standard error:

 14.63286 (77 degrees of freedom)

$values
  Parameter       values
1 X Maximum 3.500000e+01
2 Y Maximum 6.391677e+01
3 X Minimum 1.500000e+01
4 Y Minimum 9.874367e-03
5       AIC 6.612956e+02
6       BIC 6.708237e+02
7 r-squared 7.900000e-01
8      RMSE 1.435587e+01

[[3]]

> c=BC(trat,resp, npar = "BC.4")
$Coefficients

Model fitted: Brain-Cousens (hormesis) with lower limit fixed at 0 (4 parms)

Parameter estimates:

               Estimate Std. Error t-value   p-value    
b:(Intercept) -13.95721    3.65564 -3.8180 0.0002727 ***
d:(Intercept) 250.77475   60.32596  4.1570 8.381e-05 ***
e:(Intercept)  25.50595    0.69513 36.6923 < 2.2e-16 ***
f:(Intercept)  -5.61797    1.74018 -3.2284 0.0018389 ** 
---
Signif. codes:  0 ‘***’ 0.001 ‘**’ 0.01 ‘*’ 0.05 ‘.’ 0.1 ‘ ’ 1

Residual standard error:

 12.92089 (76 degrees of freedom)

$values
  Parameter      values
1 X Maximum  29.1341341
2 Y Maximum  75.3296604
3 X Minimum  15.0000000
4 Y Minimum   0.1007687
5       AIC 642.3420163
6       BIC 654.2521495
7 r-squared   0.8400000
8      RMSE  12.5937300

[[3]]

> d=CD(trat,resp, npar = "CRS.4")
$Coefficients

Model fitted: Cedergreen-Ritz-Streibig with lower limit 0 (alpha=1) (4 parms)

Parameter estimates:

                 Estimate  Std. Error t-value   p-value    
b:(Intercept)   -14.42145     3.53120 -4.0840 0.0001085 ***
d:(Intercept)  6110.38908  1944.31643  3.1427 0.0023871 ** 
e:(Intercept)    25.81624     0.75782 34.0666 < 2.2e-16 ***
f:(Intercept) -6231.70537  2001.28315 -3.1139 0.0026035 ** 
---
Signif. codes:  0 ‘***’ 0.001 ‘**’ 0.01 ‘*’ 0.05 ‘.’ 0.1 ‘ ’ 1

Residual standard error:

 12.92096 (76 degrees of freedom)

$values
  Parameter      values
1 X Maximum  28.9739740
2 Y Maximum  75.7504088
3 X Minimum  15.0000000
4 Y Minimum   0.1115036
5       AIC 642.3427825
6       BIC 654.2529157
7 r-squared   0.8400000
8      RMSE  12.5937903

[[3]]

> graph=plot_arrange(list(a,b,c,d))
Error in plots[[i]][[]] : missing subscript
Calls: plot_arrange
Execution halted