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Olivier GrandjeanOlivier Grandjean 

Install Einstein Vision Apex Wrappers - System.NullPointerException: null argument for JSONGenerator.writeStringField()

Having the same issue as Chris but my custom settings is with the correct email address and location profile = system admin. The einstein vision  package was successfully installed and I also validated the previous challenge about setting up the einstein account so really not sure what s missing here. Any idea ?
Rahul KumarRahul Kumar (Salesforce Developers) 
Hi Olivier,

May I suggest you please refer the below link to reference. hope it will be helpful.

Please mark it as best answer if the information is informative.

Thanks
Rahul Kumar