Help: Code runs in R file but not in RMarkdown

Hi, I'm trying to conduct a priori power analyses in RStudio using the semPower package and the following code. When I run it in a normal R file, there's absolutely no problem and I easily get the result of N = 403 Required Num Observations I'm looking for:

SUP_CFA <- semPower.aPriori(effect.measure = "RMSEA", effect = .08, alpha = .05, power = .80, df = 5)

summary(SUP_CFA)

However, I would like to hand in my term paper as a RMarkdown file as it looks 'cleaner'. When I run the same code in RMarkdown, I only get the following output:

Please help me. What am I doing wrong? What do I have to change in order to receive the same clean output in the Markdown file? I'm rather new in working with R and English isn't my first language.
Thanks in advance for everyone who's willing to help! :smiling_face_with_tear:

You probably want to post the RMarkdown code as well.

PS Your English is darn good!

Hi, that's very kind of you to say - thank you!

The only thing I did after opening the Markdown file was installing and loading semPower, nothing else. So, besides that, the abovementioned code is everything I used within the R code chunk.

In the meantime, someone in a different forum actually recommended me to try/add this in my chunk:

do.call(rbind, SUP_CFA)

Worked like a charm. I'm honestly lacking the R skills to know what this code actually does and why it works, but it does work (or at least the output makes sense now) - so I guess that's good? :sweat_smile: