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Target Extension 2 in Launch not sending sessionId

Level 1
Level 1

I'm trying to update from Target extension 1 to Target extension 2 in Launch but I keep getting these errors when I deploy the build to my dev or staging environments:

AT: request failed Error: Errors: sessionId query parameter is required;

AT: [page-init] View delivery error Error: Errors: sessionId query parameter is required;

Looking at the debugger, I see the calls to delivery do not have a value in sessionId:


If I check the first-party cookies for my domain, I see that I do have a 'mbox' cookie and it does have a value for 'session' in it. I was under the impression that at.js took care of all of this automatically (setting the cookie and pulling its value before sending requests). Am I missing something?

I also get error:

AT: request failed Error: Errors: field - [execute.mboxes] - global mbox is not allowed in mboxes.;

Which I assume is some other difference between Target 1 and Target 2 I have overlooked which may be a separate issue. I also get this entirely unhelpful error message:

AT Error unknown

2 Replies
Level 1
Level 1
Also seeing this error come up now and again. Anyone have a solution?