```const chunk = await request.arrayBuffer(); const multipartUpload = env.BRIEFLI_PUBLIC_FILES.resumeMultipartUpload(key, uploadId); const chunkUint8Array = new Uint8Array(chunk); const uploadedPart: R2UploadedPart = await multipartUpload.uploadPart(partNumber, chunkUint8Array);``` In the last part it's getting error of this: stack: 'DevalueError: Cannot stringify arbitrary non-POJOs. It's not worker, it's code in my Next project, How to fix it? Thanks