Some parts of flow fails when parent_job is set

const items = results.b
let titles = []

items.forEach(function(e) {
    titles.push(`"[${e.title}](${e.link})`)
});
let result = 
`List these titles & links in Markdown. Make sure they are hyperlinked.
Add an emoji at the end of each one that matches the title as best as possible.
See an EXAMPLE for how to format.
---
EXAMPLE:
1. [Example 1](https://example1.com) 👨‍💻
2. [Example 2](https://example2.com) 🕰️
...
...
---
INPUT:
${titles.join("\n")}`
return result;

{
    "error": {
        "name": "InternalErr",
        "message": "Error during isolated evaluation of expression `const items = results.b\r\nlet titles = []\r\n\r\nitems.forEach(function(e) {\r\n    titles.push(`\"[${e.title}](${e.link})`)\r\n});\r\nlet result = \r\n`List these titles & links in Markdown. Make sure they are hyperlinked.\r\nAdd an emoji at the end of each one that matches the title as best as possible.\r\nSee an EXAMPLE for how to format.\r\n---\r\nEXAMPLE:\r\n1. [Example 1](https://example1.com) :man_technologist:\r\n2. [Example 2](https://example2.com) :clock:\r\n...\r\n...\r\n---\r\nINPUT:\r\n${titles.join(\"\\n\")}`\r\nreturn result;`:\nTypeError: Cannot read properties of null (reading 'forEach')\n    at <anon>:48:7\n    at eventLoopTick (ext:core/01_core.js:153:7)"
    }
}