saveProject throws an error when a network request fails

p5.js version

2.3.2

What is your operating system?

Linux

Web browser and version

firefox 153.0.1

Actual Behavior

When saving a project, if the request fails because of a network error, saveProject() throws a TypeError instead of handling the save failure normally.
the error is:
Cannot read properties of undefined (reading 'status')
this happens because the error handler assumes error.response always exists, but for network errors there is no response.

Expected Behavior

A network error while saving should be handled as a normal save failure without throwing another error.
The user should get the usual save failure handling instead of an unhandled/rejected promise.

Steps to reproduce

Steps:

1. open an existing saved project and make some changes.
2. disconnect the network or otherwise make the api request fail without returning an http response.
3. try to save the project.
4. saveProject() rejects with:

Cannot read properties of undefined (reading 'status')

Snippet:

apiClient
  .put(`/projects/${state.project.id}`, formParams)
  .catch((error) => {
    const { response } = error;

    if (response.status === 403) {
      // ...
    }
  });

for a network error, error.response is undefined, so accessing response.status throws.
a possible fix would be to check whether response exists before accessing response.status, and handle network errors as a normal save failure.

Start at the saveProject() entry point and the apiClient.put() catch handler shown in the issue. Reproduce the failure by making the request fail without an HTTP response, then verify that the existing save-failure handling runs without an unhandled rejection or secondary TypeError.