Error 403 on some url

 hi we have migrated to route 66 some week ago, and i saw time to time some error

for example

Original url who work :

https://www.crashdebug.fr/international/17245-le-ministere-de-la-defense-et-le-ministere-de-la-sante-accordent-un-contrat-de-138-millions-de-dollars-a-apiject-systems-pour-fournir-des-seringues-preremplies-de-vaccin-covid-19-avec-un-systeme-de-suivi-par-micropuce-rfid-en-option-la-fin-commence-maintenant-nowtheendbegins-com

new url i guess from route 66

https://www.crashdebug.fr/le-ministere-de-la-defense-et-le-ministere-de-la-sante-accordent-un-contrat-de-138-millions-de-dollars-a-apiject-systems-pour-fournir-des-seringues-preremplies-de-vaccin-covid-19-avec-un-systeme-de-suivi-par-micropuce-rfid-en-option-la-fin-commence-maintenant-nowtheendbegins-com

give error 403

another user is complaning of 403 error randomly also on this article, (we dont face this issue and other don't also)

https://www.crashdebug.fr/comment-ameliorer-le-seo-d-un-site-joomla

so i dont understood why,

any help is welcome if its route 66 related,

thanks,

Hi Lefteris, thanks for your reply, i think the alias is too long where at 325 char far beyond the 256 limit, i'll will try another alias and keep you updated,

Of course we have many SEO extension, like EFSEO etc..., all these people seem work together, the only error we have are not really some error but are linked to structured data on AMP page,

meanwhile i will ask my host for the url in 403,

thanks a lot,

f.

we have more information about the error this is one in eventlog

[Tue Jul 28 19:26:28.118999 2020] [access_compat:error] [pid 19370:tid 139833477236480] [client 185.93.2.40:58464] AH01797: client denied by server configuration: /home/clients/2fdc7e34e830276d49ad0c0504882e07/web/, referer: https://www.crashdebug.fr/quand-vous-verrez-toutes-ces-choses-partie-1-de-4

all started with route 66

what this access_compat:error