Migrate to Next 15 causing issues

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Beveren posted this in #help-forum

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BeverenOP

2025-09-03T02:39:55.141Z

so I migrated my code to Next 15 and am gettting the problem DataCloneError ()=>null could not be cloned. I'm not sure how to fix this problem I have changed all my ()=>null to function(){return null} even tried commenting out all the arrow functions that have " ()=>null" but still get that error not sure what to do.

10 Replies

@Beveren so I migrated my code to Next 15 and am gettting the problem DataCloneError ()=>null could not be cloned. I'm not sure how to fix this problem I have changed all my ()=>null to function(){return null} even tried commenting out all the arrow functions that have " ()=>null" but still get that error not sure what to do.

2025-09-03T04:20:13.443Z

() => {} or () => void

@Jerico Aragon () => {} or () => void

BeverenOP

2025-09-03T05:45:41.483Z

why do I ahve to look for those as well

or like why would those be the issue?

2025-09-03T07:30:30.634Z

the issue isn’t your ()=>null syntax — it’s that any function (arrow or normal) cannot cross server–client or worker boundaries.

@Jerico Aragon the issue isn’t your `()=>null` syntax — it’s that **any function (arrow or normal)** cannot cross server–client or worker boundaries.

BeverenOP

2025-09-03T16:35:06.338Z

so I'm using pagesRputer

and I checked getStaticProps

but the props returned are serelizable

I don't know what else could be threason

like the props being returned are not functions or anything

BeverenOP

2025-09-03T18:20:47.372Z

like I commented it out and just returned empty objects but still same error