REST api error after upgrade to 5.28.3
Hi, I updated wordpress to 5.5 and CiviCRM to 5.28.3 and I am getting a new strange error on rest api.
It work correctly with XML format
same URL with only "&json={"sequential":1}"
I got this error: {"code":"rest_invalid_param","message":"Parametro(i) non valido(i): json","data":{"status":400,"params":{"json":"json non \u00e8 del tipo integer."}}}
in english must be somthing like {"code":"rest_invalid_param","message":"Parameter(i) not valid(i): json","data":{"status":400,"params":{"json":"json is not an integer type."}}}
Using the parameter json=1 works, but I use the chain query mode :/
adding "&json=1&id=2&return=email" works
May you check what's going on?