Scrapy error catching in scrapy/middleware.py file: TypeError: __init__() missing 1 required positional argument: 'uri' - python-3.x

Question

I am catching this error while starting a crawl. I have searched for an answer in several forums, and looked at the code in scrapy/middleware.py (came standard with scrapy and I have not altered it) and cannot figure out why I am getting an error.
The scraper is using both an ImagesPipeline and S3FilesStore pipeline for storing a json file and downloaded images directly into different S3 folders. I am using Python 3.6.
Any help is appreciated. The error message and my scraper settings are below, please let me know if anything else would be useful.
Traceback (most recent call last):
File "/Users/user/anaconda/envs/python3/lib/python3.6/site-
packages/twisted/internet/defer.py", line 1386, in _inlineCallbacks
result = g.send(result)
File "/Users/user/anaconda/envs/python3/lib/python3.6/site-
packages/scrapy/crawler.py", line 77, in crawl
self.engine = self._create_engine()
File "/Users/user/anaconda/envs/python3/lib/python3.6/site-
packages/scrapy/crawler.py", line 102, in _create_engine
return ExecutionEngine(self, lambda _: self.stop())
File "/Users/user/anaconda/envs/python3/lib/python3.6/site-
packages/scrapy/core/engine.py", line 70, in __init__
self.scraper = Scraper(crawler)
File "/Users/user/anaconda/envs/python3/lib/python3.6/site-
packages/scrapy/core/scraper.py", line 71, in __init__
self.itemproc = itemproc_cls.from_crawler(crawler)
File "/Users/user/anaconda/envs/python3/lib/python3.6/site-
packages/scrapy/middleware.py", line 58, in from_crawler
return cls.from_settings(crawler.settings, crawler)
File "/Users/user/anaconda/envs/python3/lib/python3.6/site-
packages/scrapy/middleware.py", line 40, in from_settings
mw = mwcls()
TypeError: __init__() missing 1 required positional argument: 'uri'
ITEM_PIPELINES = {
'scrapy.pipelines.files.S3FilesStore': 1,
'scrapy.pipelines.images.ImagesPipeline': 1
}
AWS_ACCESS_KEY_ID = 'xxxxxx'
AWS_SECRET_ACCESS_KEY= 'xxxxxx'
IMAGES_STORE = 's3 path'
FEED_URI = 's3 path'
FEED_FORMAT = 'jsonlines'
FEED_EXPORT_FIELDS = None
FEED_STORE_EMPTY = False
FEED_STORAGES = {}
FEED_STORAGES_BASE = {
'': 'scrapy.extensions.feedexport.FileFeedStorage',
'file': 'scrapy.extensions.feedexport.FileFeedStorage',
'stdout': 'scrapy.extensions.feedexport.StdoutFeedStorage',
's3': 'scrapy.extensions.feedexport.S3FeedStorage',
'ftp': 'scrapy.extensions.feedexport.FTPFeedStorage',
}
FEED_EXPORTERS = {}
FEED_EXPORTERS_BASE = {
'json': 'scrapy.exporters.JsonItemExporter',
'jsonlines': 'scrapy.exporters.JsonLinesItemExporter',
'jl': None,
'csv': None,
'xml': None,
'marshal': None,
'pickle': None,
}