TMDb plugin no longer works

When trying to search a movie with the TMDb plugin it fails with "Connection Lost" and this in the traceback:

2020-07-24T14:58:45: E: Griffith(add:320): 
Traceback (most recent call last):
  File "/usr/share/griffith/lib/add.py", line 309, in get_from_web
    self.search_movie.get_searches()
  File "/usr/share/griffith/lib/plugins/movie/PluginMovieTMDB.py", line 191, in get_searches
    self.titles.append(element['title'] + ' (' + element['release_date'] + ')')
KeyError: 'release_date'

According to The Movie Database API docs the "release_date" key still exists...

Any ideas @johncheetham?