after apply not able to set column

[scientechshub11]

movies['genres'] = movies['genres'].apply(getGenres, axis=1)
movies['keywords'] = movies['keywords'].apply(getGenres, axis=1)
movies['cast'] = movies['cast'].apply(getCast, axis=1)
movies['crew'] = movies['crew'].apply(getCrew, axis=1)
movies['overview'] = movies['overview'].apply(getOverview, axis=1)

after doing this when I am trying to
movies['tags'] = movies['genres'] + movies['keywords'] + movies['cast'] + movies['crew'] + movies['overview']

having an error like

throw new Error("File format not supported!");
^

Error: File format not supported!
at Series.NDframe (C:\Users\chakr\OneDrive\Documents\ai and ml\ainode\node_modules\danfojs\dist\danfojs-base\core\generic.js:100:23)
at new Series (C:\Users\chakr\OneDrive\Documents\ai and ml\ainode\node_modules\danfojs\dist\danfojs-base\core\series.js:134:28)
at DataFrame.$getColumnData (C:\Users\chakr\OneDrive\Documents\ai and ml\ainode\node_modules\danfojs\dist\danfojs-base\core\frame.js:196:24)
at DataFrame.get (C:\Users\chakr\OneDrive\Documents\ai and ml\ainode\node_modules\danfojs\dist\danfojs-base\core\frame.js:147:37)
at transformcsv (C:\Users\chakr\OneDrive\Documents\ai and ml\ainode\app.js:24:28)
at process.processTicksAndRejections (node:internal/process/task_queues:95:5)

can you please help me to resolve this error