Error message: Cannot lookup a property on a NULL value

[jfpelletier]

Hello everyone,

I'm having this weird issue where I use a JSON generator to create a payload for the following HTTP client snap, but apparently all the values resulting are NULL, which is weird because the output of the JSON looks fine.

This is what I use in the JSON generator:

And the output looks just fine:

However, in the following HTTP client snap, the output preview gives an error because apparently the value is null.

Can someone help me find out what I did wrong?

Thanks in advance!

JF

[jfpelletier]

Hello @SpiroTaleski,

I'm trying to send the fields as multipart payload. Please see screenshot from the HTTP Client configuration:

And this is what it looks like in the Expression Builder:

Thanks!

JF

[SpiroTaleski]

@jfpelletier If you execute the pipeline(not validate), do you getting the same error from the HTTP Client Snap? 

[jfpelletier]

Hello @SpiroTaleski,

Not sure if it's related, but I managed to solve the issue last night with the help of a support representative helping me with a very similar issue.

I had quite a lot of opened snaps in the Designer (left-overs from previous attempts...), and at least one of them seem to have interfered somehow because when we disabled all the open snaps that were doing nothing, the issue disappeared...

We were not able to pin-point the exact snap that was apparently causing the issue, anyway it's resolved and working today... 🙂

Thanks a lot for taking the time to look into this issue and suggesting solutions! 🙂

Kind regards,

JF