Running examples in 'timetk-Ex.R' failed
The error most likely occurred in:

> base::assign(".ptime", proc.time(), pos = "CheckExEnv")
> ### Name: filter_by_time
> ### Title: Filter (for Time-Series Data)
> ### Aliases: filter_by_time
> 
> ### ** Examples
> 
> library(tidyverse)
-- Attaching packages --------------------------------------- tidyverse 1.3.0 --
v ggplot2 3.3.0     v purrr   0.3.4
v tibble  3.0.1     v dplyr   0.8.5
v tidyr   1.0.3     v stringr 1.4.0
v readr   1.3.1     v forcats 0.5.0
-- Conflicts ------------------------------------------ tidyverse_conflicts() --
x dplyr::filter() masks stats::filter()
x dplyr::lag()    masks stats::lag()
> library(tidyquant)
Loading required package: lubridate

Attaching package: 'lubridate'

The following objects are masked from 'package:dplyr':

    intersect, setdiff, union

The following objects are masked from 'package:base':

    date, intersect, setdiff, union

Loading required package: PerformanceAnalytics
Loading required package: xts
Loading required package: zoo

Attaching package: 'zoo'

The following objects are masked from 'package:base':

    as.Date, as.Date.numeric


Attaching package: 'xts'

The following objects are masked from 'package:dplyr':

    first, last


Attaching package: 'PerformanceAnalytics'

The following object is masked from 'package:graphics':

    legend

Loading required package: quantmod
Loading required package: TTR
Version 0.4-0 included new data defaults. See ?getSymbols.
== Need to Learn tidyquant? ====================================================
Business Science offers a 1-hour course - Learning Lab #9: Performance Analysis & Portfolio Optimization with tidyquant!
</> Learn more at: https://university.business-science.io/p/learning-labs-pro </>

Attaching package: 'tidyquant'

The following objects are masked from 'package:timetk':

    summarise_by_time, summarize_by_time

> library(timetk)
> 
> # Filter values in January 1st through end of February, 2013
> FANG %>%
+     group_by(symbol) %>%
+     filter_by_time(date, "start", "2013-02") %>%
+     plot_time_series(date, adjusted, .facet_ncol = 2, .interactive = FALSE)
Error in bquote(on.exit({ : 'where' must be an environment
Calls: %>% ... <Anonymous> -> <Anonymous> -> eval_bare -> exit_handler -> bquote
Execution halted