Failed to update artifact Error from server Status code 400 Details each value in cef_types must be a list of strings indicating the possible typescef_types_json = r_log_source zScalerNSS 17223858

The error message suggests that the value of the "r_log_source" key in your "cef_types_json" dictionary should be a list of strings indicating possible types. To fix the error, you need to change the value of "r_log_source" to a list of strings. Here's an example:

cef_types_json = { "r_log_source" : ["zScalerNSS @ 172.23.8.58"] }

Make sure to enclose the value in square brackets to indicate it as a list.