# sketchup-model-how-to-deal-with-the-upload-size-is-negative

> Learn how to handle line model issues by generating surfaces for successful uploads. Follow easy steps using SUAPP plugins. Start designing now!

- **URL**: https://www.coohom.com/helpcenter/sketchup-model-how-to-deal-with-the-upload-size-is-negative
- **Locale**: en_US
- **Updated**: 2026-06-10

## Content

Problem
=======

The model is lines, and the uploaded model size is displayed as a negative number. Currently, line uploads are not supported, and surfaces need to be generated for upload.

![](//qhstatic-sg-s3.coohom.com/yuntai/image/png/1555309219641/A8CEBABD0663ECBAEEE7516DF7A7D2B5.png?x-oss-process=image/format,webp)

Solution
========

1. Create a new model.

2. Use the SUAPP plugin and the weld line tool to weld scattered points.

![](//qhstatic-sg-s3.coohom.com/yuntai/image/jpeg/1762314116525/5F28DDFB739037B61B8C2DA190BAF9B4.png)

3. Use the SUAPP plugin to select the surface generation tool, generate the surface, then extrude the thickness, and save and upload.

![](//qhstatic-sg-s3.coohom.com/yuntai/image/jpeg/1762314116545/8B5705A0626C2907B1B631CFA9E8953F.png)

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