Error: The response is not a valid JSON response.

Hello,

Initial condition : WordPress newly installed https://www.wecando.tn , TutorLMS plugin installed, no property created in my Analytics account)
1- I installed the plugin
2- I went to connect the Analytics profile
3- From Site Kit configuration : I logged into my account
4- From Site Kit configuration : I choosed my account (the property is not yet created)
5- From Site Kit configuration : “I choosed Setup a new property” > I got nothing
6- I go to analytincs.google.com and I create the new property
7- I get back to Site Kit configuration
8- The property was automatically detected
9- Click on “Configure analytics” From Site Kit configuration
>> Message “Error: The response is not a valid JSON response.”

Any help !
Thank you