Unexpected typeError with Prisma and Next 15

[darshansrc]

Link to the code that reproduces this issue

#75038

To Reproduce

1. Start the application in development.
2. Run a server action with prisma joint query & formData as prop

Current vs. Expected behavior

The below error should not be thrown:

⨯ TypeError: The "payload" argument must be of type object. Received null
at createService (apps/web/actions/service.ts:81:12)
79 | return { success: true, data: service };
80 | } catch (error) {

81 | console.error("Error creating service:", error);
| ^
82 | return { success: false, error: "Failed to create service" };
83 | }
84 | } {
code: 'ERR_INVALID_ARG_TYPE',
digest: '4050523144'
}

Provide environment information

Operating System: MacOS 
Binaries: 
  Node: v22.13.0
  pnpm: 9.15.3
Relevant Packages: 
  "next": "15.1.4",
  "@prisma/client": "6.2.1",
  "react": "^19.0.0",

Which area(s) are affected? (Select all that apply)

TypeScript

Which stage(s) are affected? (Select all that apply)

next dev (local), next start (local)

Additional context

I tested this issue, seems to work fine on Next 14 but throws the typeError on Next 15.

service.ts

const serviceSchema = z.object({
  name: z.string().min(1, "Name is required"),
  code: z.string().min(1, "Code is required"),
  description: z.string().optional(),
  isZimkeyService: z.boolean().default(false),
  isActive: z.boolean().default(true),
  categoryId: z.number(),
  iconImage: z.string().optional(),
  coverImage: z.string().optional(),
  thumbnailImage: z.string().optional(),
});

export async function createService(data: z.infer<typeof serviceSchema>) {
  try {
    const parsed = serviceSchema.parse(data);

    // Upload images and get keys
    const iconImageKey = parsed.iconImage
      ? await uploadImage(parsed.iconImage, "icon")
      : null;
    const coverImageKey = parsed.coverImage
      ? await uploadImage(parsed.coverImage, "cover")
      : null;
    const thumbnailImageKey = parsed.thumbnailImage
      ? await uploadImage(parsed.thumbnailImage, "thumbnail")
      : null;

    await prisma.services.create({
      data: {
        name: parsed.name,
        code: parsed.code,
        description: parsed.description,
        isZimkeyService: parsed.isZimkeyService,
        isActive: parsed.isActive,
        category: {
          connect: { id: parsed.categoryId },
        },
        iconImageKey,
        coverImageKey,
        thumbnailImageKey,
      },
    });
    return { success: true };
  } catch (error) {
    return { success: false, error: "Failed to create service" };
  }
}

Form Submit Handler:

const onSubmit = async (data: z.infer<typeof serviceSchema>) => {
    setIsLoading(true);
    try {
      const result = await createService(data);
      if (result.success) {
        toast.success("Service created successfully");
        // onSuccess?.();
        // form.reset();
      } else {
        toast.error(result.error || "Failed to create service");
      }
    } catch (error) {
      toast.error("An error occurred while creating the service");
    } finally {
      setIsLoading(false);
    }
  };

[github-actions]

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• How to Contribute to Open Source (Next.js)
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