Can you help me figure out why my R code stopped working?

Beware! As my latest victim in the RStudio saga would tell you, it all starts with an innocent question and invariably ends in misery and down the rabbit hole... Don't say I didn't warn you!


From the saga "Why is my Rstudio not working?"

Three people, 2 hours and several updates later, my pipeline_query is still stubbornly refusing to work and insisting on puzzling the pipeline_eng folk.