GL_INVALID_VALUE when viewing initial selection in Vol-E app

## Description

If the first cell (the one that is auto-selected) is clicked on load, Vol-E throws a WebGL error and remains black.

```
GL_INVALID_VALUE: glTexStorage2D: Texture dimensions must all be greater than zero.
```

The error does not occur/goes away if another volume is selected and switched to.

## Expected Behavior

The volume should load.

## Reproduction

1. Run and build CFE.
2. Click any dataset.
3. Click the automatically selected cell thumbnail on the right side of the screen.
4. The Vol-E viewer remains blank.

## Environment

_Any additional information about your environment. E.g. OS version, python version, browser etc._