problem with projects validation

problem with loading projects after loggin in via orcid on minerva-dev

{
    "code": "invalid_type",
    "expected": "string",
    "received": "null",
    "path": [
      "content",
      4,
      "organism",
      "link"
    ],
    "message": "Expected string, received null"
  },
  {
    "code": "invalid_type",
    "expected": "string",
    "received": "null",
    "path": [
      "content",
      6,
      "disease",
      "link"
    ],
    "message": "Expected string, received null"
  },
  {
    "code": "invalid_type",
    "expected": "string",
    "received": "null",
    "path": [
      "content",
      6,
      "organism",
      "link"
    ],
    "message": "Expected string, received null"
  },
  {
    "code": "invalid_type",
    "expected": "string",
    "received": "null",
    "path": [
      "content",
      16,
      "disease",
      "link"
    ],
    "message": "Expected string, received null"
  },
  {
    "code": "invalid_type",
    "expected": "string",
    "received": "null",
    "path": [
      "content",
      16,
      "organism",
      "link"
    ],
    "message": "Expected string, received null"
  }
]
r @ _app-79e2add18ed69869.js:13Understand this error