I’ve just hosted Growthbook on AWS ECS. Previously I had created a few metrics / experiments when I was running the container locally, and had the local container pointing to a remote Mongo DB. When I moved to ECS, I’m noticing requests to the

/organization/definitions

API endpoint fail, and I’m seeing this in the container logs:

Unexpected end of JSON input\n at JSON.parse (<anonymous>)\n at Object.decryptDataSourceParams (/usr/local/src/app/packages/back-end/dist/services/datasource.js:29:17)\n at Snowflake.setParams (/usr/local/src/app/packages/back-end/dist/integrations/Snowflake.js:11:36)\n at new SqlIntegration (/usr/local/src/app/packages/back-end/dist/integrations/SqlIntegration.js:17:14)\n at new Snowflake (/usr/local/src/app/packages/back-end/dist/integrations/Snowflake.js:9:1)\n at Object.getSourceIntegrationObject (/usr/local/src/app/packages/back-end/dist/services/datasource.js:69:15)\n at /usr/local/src/app/packages/back-end/dist/controllers/organizations.js:128:50\n at Array.map (<anonymous>)\n at /usr/local/src/app/packages/back-end/dist/controllers/organizations.js:127:38\n at Generator.next (<anonymous>)\n at fulfilled (/usr/local/src/app/packages/back-end/dist/controllers/organizations.js:5:58)","type":"Error","msg":"Unexpected end of JSON input"}

Per the docs I set

NODE_ENV

to

production

, and set a

JWT_SECRET

and

ENCRYPTION_KEY

. Could the fact that I saved the experiments without an encryption key when developing locally, and am trying to read those experiments in prod, be part of the issue?

Yes, it's the

ENCRYPTION_KEY

that's causing that error. The data source credentials were encrypted with one key and now it can't be decrypted

I see, so does the local container generate an

ENCRYPTION_KEY

of its own if I don’t explicitly set one?

I think it uses the string

dev

by default

I see. I tried setting to

dev

for now but saw:

throw new Error("Cannot use ENCRYPTION_KEY=dev in production. Please set to a long random string.");

I’m happy to delete the experiment definitions from Mongo and start over if that’s easiest?

Yeah, unfortunately I think deleting the data source and metrics and adding them again is probably the easiest. We should build a better way to recover from that state since I imagine you're not the first one to have this problem

cool no worries, not a huge deal to re-create and I was able to export most from the

config.yml