I have Alfred 5 and the latest workflow. I ran the debugger and got the output below;
[08:37:51.177] Logging Started...
[08:38:00.126] Notion Search[Script Filter] Queuing argument ''
[08:38:00.350] Notion Search[Script Filter] Script with argv '(null)' finished
[08:38:00.353] Notion Search[Script Filter] {"items": [{"uid": 1, "type": "default", "title": "Open Notion - No results, empty query, or error", "subtitle": "", "arg": "notion://www.notion.so/"}]}
[08:38:03.753] Notion Search[Script Filter] Queuing argument 'h'
[08:38:07.687] Notion Search[Script Filter] Script with argv '(null)' finished
[08:38:07.689] Notion Search[Script Filter] {"items": [{"uid": 1, "type": "default", "title": "Open Notion - No results, empty query, or error", "subtitle": "[SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: unable to get local issuer certificate (_ssl.c:1129)", "arg": "notion://www.notion.so/"}]}
[08:38:10.923] Notion Search[Script Filter] Queuing argument 'ha'
[08:38:11.145] Notion Search[Script Filter] Queuing argument 'hab'
[08:38:11.353] Notion Search[Script Filter] Queuing argument 'haba'
[08:38:12.222] Notion Search[Script Filter] Script with argv '(null)' finished