403 Forbidden accessing Zotero API

[bjg83]

My last successful sync was a week ago.

Running the local version of Zotero2Readwise, I can see an error accessing my API:

Client error '400 Bad Request' for url 'https://api.zotero.org/users/[XXXXX]/items?locale=en-US&itemType=%7B%27annotation%27%7D&since=0&format=json&limit=100'
The above exception was the direct cause of the following exception:
Traceback (most recent call last):
File "run.py", line 73, in
zt2rw.run()
File "/opt/hostedtoolcache/Python/3.8.18/x64/lib/python3.8/site-packages/zotero2readwise/zt2rw.py", line 53, in run
zot_annots_notes = self.get_all_zotero_items()
File "/opt/hostedtoolcache/Python/3.8.18/x64/lib/python3.8/site-packages/zotero2readwise/zt2rw.py", line 42, in get_all_zotero_items
items.extend(self.retrieve_all("annotation", self.since))
File "/opt/hostedtoolcache/Python/3.8.18/x64/lib/python3.8/site-packages/zotero2readwise/zt2rw.py", line 82, in retrieve_all
query = self.zotero_client.items(itemType={item_type}, since=since)
File "/opt/hostedtoolcache/Python/3.8.18/x64/lib/python3.8/site-packages/pyzotero/zotero.py", line 167, in wrapped_f
retrieved = self._retrieve_data(func(self, *args))
File "/opt/hostedtoolcache/Python/3.8.18/x64/lib/python3.8/site-packages/pyzotero/zotero.py", line 460, in _retrieve_data
merged_params = params | self.url_params
TypeError: unsupported operand type(s) for |: 'dict' and 'dict'

[XXXXX removed user ID here]

I see the same error text after 'the above exception was the direct cause...' in the Github error console.

I can access my web library fine. So I'm not sure why there's an API error.

I also tried generating a new API key and ran using it. I got the same response.

Any ideas? Has anyone else reported this? Is it an API error? Or might Zotero have blocked my API access?