Reactjs – Uploadthing Error: Something went wrong. Please contact UploadThing and provide the following cause: RetryError

I have an issue that only appears on the production environment. It uploads an image on uploadthing, but then does not redirect to the next page.

Error:

UploadThingError: Something went wrong. Please report this to UploadThing.
    at O (323-ac80e073b694958b.js:1:134496)
    at 323-ac80e073b694958b.js:1:39164Caused by: RetryError
    at 323-ac80e073b694958b.js:1:36171
    at 323-ac80e073b694958b.js:2:4679
    at 323-ac80e073b694958b.js:2:3847
    at 323-ac80e073b694958b.js:2:2259
    at Object.s (323-ac80e073b694958b.js:2:2184)
    at 323-ac80e073b694958b.js:2:3860
    at 323-ac80e073b694958b.js:2:5316
    at 323-ac80e073b694958b.js:2:6013
    at 323-ac80e073b694958b.js:2:3670
    at 323-ac80e073b694958b.js:2:2259

These are the source files:

src/app/api/uploadthing/core.ts

import { createUploadthing, type FileRouter } from "uploadthing/next";
import { z } from "zod";
import sharp from "sharp";
import { db } from "@/db";

const f = createUploadthing();

export const ourFileRouter = {
  imageUploader: f({ image: { maxFileSize: "4MB" } })
    .input(z.object({ configId: z.string().optional() }))
    .middleware(async ({ input }) => {
      return { input };
    })
    .onUploadComplete(async ({ metadata, file }) => {
      const { configId } = metadata.input;

      const res = await fetch(file.url);
      const buffer = await res.arrayBuffer();

      const imgMetadata = await sharp(buffer).metadata();
      const { width, height } = imgMetadata;

      if (!configId) {
        const configuration = await db.configuration.create({
          data: {
            imageUrl: file.url,
            height: height || 500,
            width: width || 500,
          },
        });

        return { configId: configuration.id };
      } else {
        const updatedConfiguration = await db.configuration.update({
          where: {
            id: configId,
          },
          data: {
            croppedImageUrl: file.url,
          },
        });

        return { configId: updatedConfiguration.id };
      }
    }),
} satisfies FileRouter;

export type OurFileRouter = typeof ourFileRouter;

src/app/configure/upload/page.tsx

"use client";

import { Progress } from "@/components/ui/progress";
import { useToast } from "@/hooks/use-toast";
import { useUploadThing } from "@/lib/uploadthing";
import { cn } from "@/lib/utils";
import { Image, Loader2, MousePointerSquareDashed } from "lucide-react";
import { useRouter } from "next/navigation";
import { useState, useTransition } from "react";
import Dropzone, { FileRejection } from "react-dropzone";

const Page = () => {
  const { toast } = useToast();
  const [isDragOver, setIsDragOver] = useState<boolean>(false);
  const [uploadProgress, setUploadProgress] = useState<number>(0);
  const router = useRouter();

  const { startUpload, isUploading } = useUploadThing("imageUploader", {
    onClientUploadComplete: ([data]) => {
      console.log(data);
      const configId = data.serverData.configId;
      startTransition(() => {
        router.push(`/configure/design?id=${configId}`);
      });
    },
    onUploadProgress(p) {
      setUploadProgress(p);
    },
    onUploadError: (err) => {
      console.log(err);
    },
  });

  const onDropRejected = (rejectedFiles: FileRejection[]) => {
    const [file] = rejectedFiles;

    setIsDragOver(false);

    toast({
      title: `${file.file.type} type is not supported.`,
      description: "Please choose a PNG, JPG, or JPEG image instead.",
      variant: "destructive",
    });
  };

  const onDropAccepted = (acceptedFiles: File[]) => {
    try {
      startUpload(acceptedFiles, { configId: undefined });

      setIsDragOver(false);
    } catch (error) {
      console.log(error);
    }
  };

  const [isPending, startTransition] = useTransition();

  return (
    <div
      className={cn(
        "relative h-full flex-1 my-16 w-full rounded-xl bg-gray-900/5 p-2 ring-1 ring-inset ring-gray-900/10 lg:rounded-2xl flex justify-center flex-col items-center",
        {
          "ring-blue-900/25 bg-blue-900/10": isDragOver,
        }
      )}
    >
      <div className="relative flex flex-1 flex-col items-center justify-center w-full">
        <Dropzone
          onDropRejected={onDropRejected}
          onDropAccepted={onDropAccepted}
          accept={{
            "image/png": [".png"],
            "image/jpeg": [".jpeg"],
            "image/jpg": [".jpg"],
          }}
          onDragEnter={() => setIsDragOver(true)}
          onDragLeave={() => setIsDragOver(false)}
          disabled={isUploading || isPending}
        >
          {({ getRootProps, getInputProps }) => (
            <div
              className="h-full w-full flex-1 flex flex-col items-center justify-center"
              {...getRootProps()}
            >
              <input {...getInputProps()} />
              {isDragOver ? (
                <MousePointerSquareDashed className="h-6 w-6 text-zinc-500 mb-2" />
              ) : isUploading || isPending ? (
                <Loader2 className="animate-spin h-6 w-6 text-zinc-500 mb-2" />
              ) : (
                <Image className="h-6 w-6 text-zinc-500 mb-2" />
              )}
              <div className="flex flex-col justify-center mb-2 text-sm text-zinc-700">
                {isUploading ? (
                  <div className="flex flex-col items-center">
                    <p>Uploading...</p>
                    <Progress
                      value={uploadProgress}
                      className="mt-2 w-40 h-2 bg-gray-300"
                    />
                  </div>
                ) : isPending ? (
                  <div className="flex flex-col items-center">
                    <p>Redirecting, please wait...</p>
                  </div>
                ) : isDragOver ? (
                  <p>
                    <span className="font-semibold">Drop file</span> to upload
                  </p>
                ) : (
                  <p>
                    <span className="font-semibold">Click to upload</span> or
                    drag and drop
                  </p>
                )}
              </div>

              {isPending ? null : (
                <p className="text-xs text-zinc-500">PNG, JPG, JPEG</p>
              )}
            </div>
          )}
        </Dropzone>
      </div>
    </div>
  );
};

export default Page;

These are the dependencies:

 "@uploadthing/react": "^6.7.2",
    "axios": "^1.7.7",
    "class-variance-authority": "^0.7.0",
    "clsx": "^2.1.1",
    "framer-motion": "^11.5.4",
    "lucide-react": "^0.439.0",
    "next": "14.2.8",
    "prisma": "^5.19.1",
    "react": "^18",
    "react-dom": "^18",
    "react-dom-confetti": "^0.2.0",
    "react-dropzone": "^14.2.3",
    "react-rnd": "^10.4.12",
    "resend": "^4.0.0",
    "sharp": "^0.33.5",
    "tailwind-merge": "^2.5.2",
    "tailwindcss-animate": "^1.0.7",
    "uploadthing": "^6.13.2",
    "zod": "^3.23.8"

I already tried several things like changing the version of uploadthing and @uploadthing/react, but to no avail.