Script crash in exporting config vars

[Ontokrat]

Hi,
I'm running a Meteor based application.
So, aside all other config vars - who are exported well - I have a config var called METEOR_SETTINGS, containing a bunch of vars in this format:

{
	"aaa": "xxx",
	"bbb": "yyy",
  	"ccc": {
		"cprime" : "xxxx",
		"csecond" : "yyy",
	},
	"public": {
	    "ddd": xxx,
	    "eee": yyyy,
	}
}

When it comes to those vars, the script is failing.
How to fix it? Or why not just looking in the script to vars who are effectively used: CF_AUTH_KEY, CF_EMAIL& CF_ZONE_ID?

Thanks

-----> Cloudflare purgeable cache buildpack... app detected
Exporting CF_AUTH_KEY
Exporting CF_EMAIL
Exporting CF_ZONE_ID
...
/app/tmp/buildpacks/dbad5bf76b26b6ad41469975f5f6c5a8144c5062c6162755e83dc78220a76364b429ca952dea13fcefef5858a70da1bda97341003c9ff4ce50d68d531066ad38/bin/compile: 54: /tmp/d20180214-70-1s9ghp7/env_exports: Kaddress:: not found
/app/tmp/buildpacks/dbad5bf76b26b6ad41469975f5f6c5a8144c5062c6162755e83dc78220a76364b429ca952dea13fcefef5858a70da1bda97341003c9ff4ce50d68d531066ad38/bin/compile: 55: /tmp/d20180214-70-1s9ghp7/env_exports: Syntax error: "}" unexpected
 !     Push rejected, failed to compile Cloudflare purgeable cache buildpack... app.
 !     Push failed