No route found for the specified format html. Supported formats: csv, json. (Drupal Routing)

Problem:

#drush cr
 [error]  Symfony\Component\HttpKernel\Exception\NotAcceptableHttpException: No route found for the specified format html. Supported formats: csv, json. in Drupal\Core\Routing\RequestFormatRouteFilter->filter() (line 65 of /var/www/core/lib/Drupal/Core/Routing/RequestFormatRouteFilter.php).

 

Solution?

Drupal

Comments

Profile picture for user Guest

Mo, 02/24/2025 - 12:16

I have a view with a path like

/my-content-export
to export entivies as JSON or CSV.

I have changed it to

/my-content-export.csv
and the error is disappeared. But when I try to change to path to
/my-content-export.json
I get a client error.

 

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