Error on creating first data processor on v 1.39 and civi 5.37.2
Error: Class name must be a valid object or a string in _civicrm_api3_basic_get() (Zeile 1246 von [...]sites/all/modules/civicrm/api/v3/utils.php).
Seems that the API is not installed corrctly. _civicrm_api3_get_BAO("civicrm_api3_data_processor_get")
returns an empty string :(
And the api explorer lists dataprocessor but rund into the same error.
I'm sorry that I can't get civi to produce a backtrace...
But do you have any clues?