AllocineParser is starting over with less movies

[StegSchreck]

Describe the bug
Allocine starts to parse a certain number of movies on a certain number of pages. Somewhere in the middle, it is starting over with a single page of movies and just 36 movies.

Expected behavior
Allocine parsing the initially found, complete set of available (rated) movies from Allocine

Desktop (please complete the following information):

• Version: 23e7767
• Platform OS: Manjaro Linux
• Firefox version: 81.0 (64-bit)
• Geckodriver version: 0.26.0
• Python version: 3.8.5
• PIP version: 20.2
• Running in a virtualenv?: yes
• Running in Docker?: no
• Executed command: python3 transfer_ratings.py -s allocine

Geckodriver log

console.error: SearchCache: "_readCacheFile: Error reading cache file:" (new Error("", "(unknown module)"))
1602949509356	Marionette	WARN	TLS certificate errors will be ignored for this session
JavaScript warning: https://www.allocine.fr/, line 138: unreachable code after return statement
JavaScript warning: https://www.allocine.fr/film/fichefilm_gen_cfilm=198937.html, line 138: unreachable code after return statement
JavaScript warning: https://www.allocine.fr/film/fichefilm_gen_cfilm=232128.html, line 138: unreachable code after return statement

[StegSchreck]

For some reason AllocineParser is restarting the parsing. This might be caused by an AttributeError, which is then handled by https://github.com/StegSchreck/RatS/blob/master/RatS/base/base_ratings_parser.py#L35
In my test runs it was always the same movie where this happens: https://www.allocine.fr/film/fichefilm_gen_cfilm=20010.html

• Check why this particular movie is not being parsed correctly.
• Check if the restart of the parsing is causing issues with other parsers as well (--> AttributeError: 'NoneType' object has no attribute 'find' #129 ?)