Web scrape troubleshooting
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list of technical issues
- Content of web page was changed (revision): Th expected web content (of specified DOM element) became empty.
- Multiple sources of same column such as different HTML DOM but have the same column value.
- Backup the HTML text of parent DOM element
- (optional) Complete HTML file backup
- The IP was banned from server
- Setting the temporization (sleep time) between each request ex: PHP: sleep - Manual, AutoThrottle extension — Scrapy 1.0.3 documentation
- The server responded with a status of 403: '403 forbidden' --> Change the network IP
- CATCHA
- AJAX
Further reading