Error Indexing Map in MNI Script Process Node

I have a process where I have two script nodes.  The First creates a parent record type and stores it to a PV!:

'recordType!{f68fc74f-edcf-4bec-b576-6aa21d7ae8df}WPA1 Workflow Instance'(
  'recordType!{f68fc74f-edcf-4bec-b576-6aa21d7ae8df}WPA1 Workflow Instance.fields.{707eb7ae-ea9f-446e-9f88-d818ff7227fb}parentType': typename(typeof(pv!event)),
  'recordType!{f68fc74f-edcf-4bec-b576-6aa21d7ae8df}WPA1 Workflow Instance.fields.{74c50dc1-dd17-43f3-92b6-98bf5753125a}parentId': pv!eventId,
  'recordType!{f68fc74f-edcf-4bec-b576-6aa21d7ae8df}WPA1 Workflow Instance.fields.{c939f3ac-6a45-4ca5-9441-44aa056523ca}targetCompletionDate': pv!event['recordType!{f07fa26e-a28d-44ca-ab58-7ba4db20200b}WPA1 Event.fields.{987c7817-ad5b-4c64-b91e-0ab1087a91ea}endDate'],
  'recordType!{f68fc74f-edcf-4bec-b576-6aa21d7ae8df}WPA1 Workflow Instance.fields.{d18891c0-c267-4d9a-8370-4bb662b7be83}createdBy': loggedInUser(),
  'recordType!{f68fc74f-edcf-4bec-b576-6aa21d7ae8df}WPA1 Workflow Instance.fields.{d2bbcf03-34b1-431a-8ca5-8228506a444a}createdOn': now(),
  'recordType!{f68fc74f-edcf-4bec-b576-6aa21d7ae8df}WPA1 Workflow Instance.fields.{bd6e3937-0113-48bd-b62f-22e2f1b3b12f}modifiedBy': loggedInUser(),
  'recordType!{f68fc74f-edcf-4bec-b576-6aa21d7ae8df}WPA1 Workflow Instance.fields.{11f44723-e150-4e68-ba0a-1a06096682ea}modifiedOn': now(),
  'recordType!{f68fc74f-edcf-4bec-b576-6aa21d7ae8df}WPA1 Workflow Instance.fields.{bd5f02c8-e3b6-41e7-aa0a-57469ad481e9}isActive': "false",
  'recordType!{f68fc74f-edcf-4bec-b576-6aa21d7ae8df}WPA1 Workflow Instance.fields.{93b08b29-87c8-4a1f-a46f-7245e8f03587}statusId': 1,
  'recordType!{f68fc74f-edcf-4bec-b576-6aa21d7ae8df}WPA1 Workflow Instance.fields.{506fae0f-ba80-4b84-b95b-6bf96a442528}workflowTemplateId': pv!workflowTemplate['recordType!{bb035f50-d14a-4303-9c20-48d3e48deab0}WPA1 Workflow Template.fields.{900e52c7-75ad-4e6c-85ef-6359c8362fc8}id']
)

Next I have and MNI Process Script which builds related records and appends them to the related record list of the record above:

'recordType!{95d43233-0ac2-44c2-a213-4217c2782a30}WPA1 Task Instance'(
  'recordType!{95d43233-0ac2-44c2-a213-4217c2782a30}WPA1 Task Instance.relationships.{d25c8435-93f4-4b34-abad-05cbcba1af32}workflowInstance': pv!workflowInstance,
  'recordType!{95d43233-0ac2-44c2-a213-4217c2782a30}WPA1 Task Instance.fields.{3386d000-5e7d-44fe-8d2a-ed6a4894e167}taskTemplateId': ac!templateTask['recordType!{26443545-ab3d-444f-9cd1-fbb7ce8d789a}WPA1 Task Template.fields.{59029bb2-8b0f-458e-88cb-14f4d2d18946}id'],
  'recordType!{95d43233-0ac2-44c2-a213-4217c2782a30}WPA1 Task Instance.fields.{adf3c23e-9ba1-4445-ae28-8936f5c44f43}startDate': a!subtractDateTime(
    startDateTime: pv!event['recordType!{f07fa26e-a28d-44ca-ab58-7ba4db20200b}WPA1 Event.fields.{987c7817-ad5b-4c64-b91e-0ab1087a91ea}endDate'],
    days: (
      7 * ac!templateTask['recordType!{26443545-ab3d-444f-9cd1-fbb7ce8d789a}WPA1 Task Template.fields.{d5a9a527-bbff-429d-9849-e10b960214e4}assignedWeek'] + ac!templateTask['recordType!{26443545-ab3d-444f-9cd1-fbb7ce8d789a}WPA1 Task Template.fields.{784ab85a-387c-4967-b018-dd9adddacab2}durationDays']
    )
  ),
  'recordType!{95d43233-0ac2-44c2-a213-4217c2782a30}WPA1 Task Instance.fields.{021e528c-060d-4eda-8bf6-d2752fc81441}dueDate': a!subtractDateTime(
    startDateTime: pv!event['recordType!{f07fa26e-a28d-44ca-ab58-7ba4db20200b}WPA1 Event.fields.{987c7817-ad5b-4c64-b91e-0ab1087a91ea}endDate'],
    days: 7 * ac!templateTask['recordType!{26443545-ab3d-444f-9cd1-fbb7ce8d789a}WPA1 Task Template.fields.{d5a9a527-bbff-429d-9849-e10b960214e4}assignedWeek']
  ),
  'recordType!{95d43233-0ac2-44c2-a213-4217c2782a30}WPA1 Task Instance.fields.{2866d3a9-4513-4c8c-8d73-4b84cc901bbc}name': ac!templateTask['recordType!{26443545-ab3d-444f-9cd1-fbb7ce8d789a}WPA1 Task Template.fields.{69cdc449-1e76-4725-8192-7a846f2ece52}name'],
  'recordType!{95d43233-0ac2-44c2-a213-4217c2782a30}WPA1 Task Instance.fields.{fb95b4cf-a710-433a-9985-c51f1fc0a9d1}description': ac!templateTask['recordType!{26443545-ab3d-444f-9cd1-fbb7ce8d789a}WPA1 Task Template.fields.{51bb04e4-0885-412c-a597-5a811a2e1ac3}description'],
  'recordType!{95d43233-0ac2-44c2-a213-4217c2782a30}WPA1 Task Instance.fields.{34de3af6-707a-4e2e-8aeb-4a5068aca485}createdBy': loggedInUser(),
  'recordType!{95d43233-0ac2-44c2-a213-4217c2782a30}WPA1 Task Instance.fields.{24e8cbf2-6e65-4147-912c-356d56ee09e9}createdOn': now(),
  'recordType!{95d43233-0ac2-44c2-a213-4217c2782a30}WPA1 Task Instance.fields.{2e064add-6ec2-4045-b89f-f7334e62a237}modifiedBy': loggedInUser(),
  'recordType!{95d43233-0ac2-44c2-a213-4217c2782a30}WPA1 Task Instance.fields.{6c9b73fe-ab0d-40d7-998a-6c3f4b62bab1}modifiedOn': now()
)

When i execute this process however the MNI Process is failing with the following errors: 

I'm not referencing any maps that I know of, so I'm not sure where to look to solve this issue.

Any idea where my issue is?