First thing would be to make sure R does function at all. I wrote a lengthy piece about that; maybe you could check it out.
The about .rds and .RData. With ads you can store a single object from R and later reload it, that is what I used to store the tibble object (“datalist”) and reload it in the second R Snippet. RData stores the whole active environment (save.image() and load()). I deactivated some lines with hashtags (´#´) that are not currently needed you can reactivate them by removing the hashtags.
With getwd() and setwd() you set the working directory of R. By default that is on a user’s space somewhere and you ca see it by getwd(). In this case I used the folder of the KNIME workflow. But you might change that.
This would transfer all the collected tables from the docx into a single table but since the structure is different that will not work in this case.