I tried following their tutorials on their site, did their quick start
stuff as well as read the docs thoroughly, but I keep getting the error
above: "Error: Key content was undefined. Cannot pass undefined in JSON.
Use null instead."
I can get it all working in the above plunk, so I understand the concepts.
Then I copied that same code from the plunk, and CDN links to my project,
same error. Im using ionic framework for a web-based app. Angular and
everything is still working fine,I just get the error when trying to hit
the "add" button to run the function.
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