migration fails with error!

### Current Behavior

SyntaxError: Expected ',' or '}' after property value in JSON at position 21138
at JSON.parse ()
at Object.migrate (/home/pi/migration/node-red-dashboard-2-migration/index.js:55:21)
at /home/pi/migration/node-red-dashboard-2-migration/migrate.js:24:43
at FSReqCallback.readFileAfterClose [as oncomplete] (node:internal/fs/read/context:68:3)

### Expected Behavior

Migration success

### Steps To Reproduce

migrate my flows exported from DB 1.

### Environment

- FlowFuse version:
- Node.js version: 20.x
- npm version:
- Platform/OS: docker
- Browser:

### Linked Customers

- Customer name and/or link to HubSpot contact