shiny app works locally but not on shinyapps.io

Posit Professional & Hosted Products shinyapps.io
1

I was trying to deploy an R Shiny app that works perfectly when I run it locally. But when I deploy the app, it shows an error message in some of the outputs: " An error has occurred
The application failed to start. Contact the author for more information.".
I'm not particularly clear about what is going wrong (since the app works on my R session). Could you please suggest to me things I should try to get the app work on the server too?
Here are the logs of the shinyapps.

2021-12-20T18:52:18.687892+00:00 shinyapps[5342245]: httpuv version: 1.6.3
2021-12-20T18:52:18.687954+00:00 shinyapps[5342245]: RJSONIO version: (none)
2021-12-20T18:52:18.687962+00:00 shinyapps[5342245]: htmltools version: 0.5.2
2021-12-20T18:52:18.687921+00:00 shinyapps[5342245]: knitr version: 1.36
2021-12-20T18:52:18.695044+00:00 shinyapps[5342245]: Using jsonlite for JSON processing
2021-12-20T18:52:18.687925+00:00 shinyapps[5342245]: jsonlite version: 1.7.2
2021-12-20T18:52:18.688224+00:00 shinyapps[5342245]: Using pandoc: /opt/connect/ext/pandoc/2.11
2021-12-20T18:52:18.698739+00:00 shinyapps[5342245]: 
2021-12-20T18:52:18.698740+00:00 shinyapps[5342245]: Starting R with process ID: '43'
2021-12-20T18:52:18.699190+00:00 shinyapps[5342245]: Shiny application starting ...
2021-12-20T18:52:19.105782+00:00 shinyapps[5342245]: 
2021-12-20T18:52:19.105785+00:00 shinyapps[5342245]: Attaching package: ‘dplyr’
2021-12-20T18:52:19.105786+00:00 shinyapps[5342245]: 
2021-12-20T18:52:19.106520+00:00 shinyapps[5342245]: The following objects are masked from ‘package:stats’:
2021-12-20T18:52:19.106521+00:00 shinyapps[5342245]: 
2021-12-20T18:52:19.106521+00:00 shinyapps[5342245]:     filter, lag
2021-12-20T18:52:19.106521+00:00 shinyapps[5342245]: 
2021-12-20T18:52:19.106810+00:00 shinyapps[5342245]: 
2021-12-20T18:52:19.106811+00:00 shinyapps[5342245]:     intersect, setdiff, setequal, union
2021-12-20T18:52:19.106810+00:00 shinyapps[5342245]: The following objects are masked from ‘package:base’:
2021-12-20T18:52:19.106811+00:00 shinyapps[5342245]: 
2021-12-20T18:52:19.361091+00:00 shinyapps[5342245]: 
2021-12-20T18:52:19.361092+00:00 shinyapps[5342245]: Attaching package: ‘plotly’
2021-12-20T18:52:19.361367+00:00 shinyapps[5342245]: The following object is masked from ‘package:ggplot2’:
2021-12-20T18:52:19.361367+00:00 shinyapps[5342245]: 
2021-12-20T18:52:19.361093+00:00 shinyapps[5342245]: 
2021-12-20T18:52:19.361368+00:00 shinyapps[5342245]: 
2021-12-20T18:52:19.361368+00:00 shinyapps[5342245]:     last_plot
2021-12-20T18:52:19.361592+00:00 shinyapps[5342245]: The following object is masked from ‘package:stats’:
2021-12-20T18:52:19.361593+00:00 shinyapps[5342245]: 
2021-12-20T18:52:19.361593+00:00 shinyapps[5342245]:     filter
2021-12-20T18:52:19.361594+00:00 shinyapps[5342245]: 
2021-12-20T18:52:19.361812+00:00 shinyapps[5342245]: The following object is masked from ‘package:graphics’:
2021-12-20T18:52:19.361813+00:00 shinyapps[5342245]: 
2021-12-20T18:52:19.361813+00:00 shinyapps[5342245]:     layout
2021-12-20T18:52:19.380698+00:00 shinyapps[5342245]: 
2021-12-20T18:52:19.380700+00:00 shinyapps[5342245]: 
2021-12-20T18:52:19.361813+00:00 shinyapps[5342245]: 
2021-12-20T18:52:19.380699+00:00 shinyapps[5342245]: Attaching package: ‘shinyjs’
2021-12-20T18:52:19.380985+00:00 shinyapps[5342245]:     runExample
2021-12-20T18:52:19.380985+00:00 shinyapps[5342245]: 
2021-12-20T18:52:19.380983+00:00 shinyapps[5342245]: The following object is masked from ‘package:shiny’:
2021-12-20T18:52:19.380984+00:00 shinyapps[5342245]: 
2021-12-20T18:52:19.381218+00:00 shinyapps[5342245]:     removeClass, show
2021-12-20T18:52:19.381218+00:00 shinyapps[5342245]: 
2021-12-20T18:52:19.381217+00:00 shinyapps[5342245]: The following objects are masked from ‘package:methods’:
2021-12-20T18:52:19.381218+00:00 shinyapps[5342245]: 
2021-12-20T18:52:20.203243+00:00 shinyapps[5342245]: Error in value[[3L]](cond) : object 'Annual_product_CO2_2018' not found
2021-12-20T18:52:20.203244+00:00 shinyapps[5342245]: Calls: local ... tryCatch -> tryCatchList -> tryCatchOne -> <Anonymous>
2021-12-20T18:52:20.203260+00:00 shinyapps[5342245]: Execution halted
2021-12-20T18:52:20.203291+00:00 shinyapps[5342245]: Shiny application exiting ...
2

An object called 'Annual_product_CO2_2018' is referenced in your code but not defined programmatically, most like the app works locally because the object already exists in your current environment but since it's not defined in code it fails on shinyapps.io's servers.

3

I don’t really think it was the problem because I already the object in the server.r file used on it, let me double check rn…