[Braincloud] Error in tm::termFreq(text, control = list(removePunctuation = TRUE, tolower = TRUE, : > inherits(doc, "TextDocument") || is.character(doc) is not TRUE

[Eminmpenza]

Hi,

I'm trying to generate a braincloud from severals pdf files from one of my research. All of the files are in the same folder as the scripts.

Unfortunately, R. Studio keeps returning an error :

Error in tm::termFreq(text, control = list(removePunctuation = TRUE, tolower = TRUE, :
inherits(doc, "TextDocument") || is.character(doc) is not TRUE

I've tried all those following different scripts and the same error keeps being displayed in every case

braincloud()
braincloud(image="brain1", text.size=0.6, colours.replicate=FALSE)

braincloud(pdf.file=".",
            words=NULL,
            frequency=NULL,
            word.length.min=4,
            word.length.max=Inf,
            freq.min=10,
            freq.max=Inf,
            image=NULL,
            text.size=0.5,
            colours="neuropsychology",
            colours.replicate=TRUE)

Here are some sceenshoots about the issue.

Does anyone know how to fix it ?