Plotting the output of fit_curve() when it includes warnings about i2extras HOT 1 OPEN

> sessionInfo()
R version 4.1.1 (2021-08-10)
Platform: x86_64-pc-linux-gnu (64-bit)
Running under: Ubuntu 20.04.3 LTS

Matrix products: default
BLAS:   /usr/local/lib/R/lib/libRblas.so
LAPACK: /usr/local/lib/R/lib/libRlapack.so

locale:
 [1] LC_CTYPE=en_GB.UTF-8       LC_NUMERIC=C              
 [3] LC_TIME=en_GB.UTF-8        LC_COLLATE=en_GB.UTF-8    
 [5] LC_MONETARY=en_GB.UTF-8    LC_MESSAGES=en_GB.UTF-8   
 [7] LC_PAPER=en_GB.UTF-8       LC_NAME=C                 
 [9] LC_ADDRESS=C               LC_TELEPHONE=C            
[11] LC_MEASUREMENT=en_GB.UTF-8 LC_IDENTIFICATION=C       

attached base packages:
[1] stats     graphics  grDevices utils     datasets  methods  
[7] base     

other attached packages:
 [1] i2extras_0.1.2        incidence2_1.2.2.9000 forcats_0.5.1        
 [4] stringr_1.4.0         dplyr_1.0.7           purrr_0.3.4          
 [7] readr_2.0.2           tidyr_1.1.4           tibble_3.1.5         
[10] ggplot2_3.3.5         tidyverse_1.3.1      

loaded via a namespace (and not attached):
 [1] nlme_3.1-153        fs_1.5.0            lubridate_1.8.0    
 [4] RColorBrewer_1.1-2  httr_1.4.2          tools_4.1.1        
 [7] backports_1.2.1     utf8_1.2.2          R6_2.5.1           
[10] rpart_4.1-15        Hmisc_4.6-0         DBI_1.1.1          
[13] colorspace_2.0-2    nnet_7.3-16         withr_2.4.2        
[16] processx_3.5.2      gridExtra_2.3       tidyselect_1.1.1   
[19] compiler_4.1.1      cli_3.0.1           rvest_1.0.1        
[22] htmlTable_2.3.0     xml2_1.3.2          bookdown_0.24      
[25] checkmate_2.0.0     scales_1.1.1        callr_3.7.0        
[28] digest_0.6.28       foreign_0.8-81      minqa_1.2.4        
[31] rmarkdown_2.11      base64enc_0.1-3     jpeg_0.1-9         
[34] pkgconfig_2.0.3     htmltools_0.5.2     lme4_1.1-27.1      
[37] highr_0.9           dbplyr_2.1.1        fastmap_1.1.0      
[40] htmlwidgets_1.5.4   rlang_0.4.12        readxl_1.3.1       
[43] rstudioapi_0.13     generics_0.1.0      jsonlite_1.7.2     
[46] magrittr_2.0.1      Formula_1.2-4       Matrix_1.3-4       
[49] Rcpp_1.0.7          munsell_0.5.0       fansi_0.5.0        
[52] clipr_0.7.1         abind_1.4-5         lifecycle_1.0.1    
[55] stringi_1.7.5       yaml_2.2.1          MASS_7.3-54        
[58] grid_4.1.1          crayon_1.4.1        lattice_0.20-45    
[61] haven_2.4.3         splines_4.1.1       hms_1.1.1          
[64] ps_1.6.0            knitr_1.36          pillar_1.6.4       
[67] boot_1.3-28         reprex_2.0.1        glue_1.4.2         
[70] ciTools_0.6.1       evaluate_0.14       trending_0.0.3     
[73] latticeExtra_0.6-29 data.table_1.14.2   modelr_0.1.8       
[76] vctrs_0.3.8         png_0.1-7           nloptr_1.2.2.2     
[79] tzdb_0.1.2          cellranger_1.1.0    gtable_0.3.0       
[82] assertthat_0.2.1    xfun_0.26           broom_0.7.9        
[85] coda_0.19-4         survival_3.2-13     arm_1.11-2         
[88] cluster_2.1.2       ellipsis_0.3.2