I use TYPO3 8.7 and NEWS extension 6.3 and shariff-sharing. When i share a news record on Facebook the publication goes well, but when i tried to go back to news record i get 404 error. I think the problem is a query parameter called attach to outbound links by Facebook and appearing in the news record URL. Something like http://example.com/newstitle/?fbclid=IwAR2QIndkh'. What i must do to correct this?
Any help would be appreciated.
As @Wolffc already noted, you need to add the parameter to TYPO3's cHash excluded parameters.
If you use realurl, you also need to tell realurl about it. The current master contains a change for that https://github.com/dmitryd/typo3-realurl/commit/2f1dfced4a2f64656f4091ab79ab307ff6daa469 - that makes realurl reconfigure TYPO3 to include the parameter.
Until it gets released, I suggested a common configuration that I use my realurl configuration (let realurl use the TYPO3 conf) here: https://github.com/dmitryd/typo3-realurl/pull/650