Tracker Proxy does not work 400 (Bad Request)

I do not know why this error occurs, it does not work neither with matomo.php nor with matomo.js, decode the content of the URL and do not detect the reason for a bad request, I leave below the line where the error occurs. as well as the content of one of the parameters of the beacon the other one

dK = g.sendBeacon(dD, dC)
error: Failed to load resource the server responded with a status of 400 ()

dD <-- ********/matomo/matomo.php?action_name=*********%2F*%2F********

dC <-- Blob {size: 678, type: 'application/x-www-form-urlencoded; charset=utf-8'}

Note: I obfuscate the url because it does not allow me to publish.

Hi @deepertech
Can you check the HTTP and Matomo errors log files?
Maybe also your server has a kind of firewall that prevent the use of some queries? (eg. forbidden pattern, forbidden query param, etc.)

after many tests I have been able to verify that the error occurs due to not giving write permission to the token for the specific domain of the analytics :slight_smile: