# Data not loaded

<figure><img src="/files/CIulF4dndfOJOpaXuAyl" alt=""><figcaption></figcaption></figure>

### Explanation

This error message arises when attempting to load a saved Theia3D workspace. It indicates that the trial folder selected when browsing to load a workspace is missing required files, such as video or .t3d files.

### Possible Solutions

1. Replace any missing video files. If the workspace failed to load due to one or more missing video files and the raw video data for the trial is still available, identify which video files are missing from the workspace folder and copy them from the raw video data trial folder.
2. Reprocess the trial and replace the saved workspace. If the workspace failed to load due to one or more missing .t3d files, it is necessary to reprocess the trial from the raw data. Follow the typical steps for processing an individual movement trial: [load videos](https://docs.theiamarkerless.com/apollo-v2024/troubleshooting/error-messages/pages/fuBTxVKbvavh0XLrjycG#id-5.2.-load-video-data), [load calibration](https://docs.theiamarkerless.com/apollo-v2024/troubleshooting/error-messages/pages/fuBTxVKbvavh0XLrjycG#id-5.3.-load-calibration-file), [load or change the preferences](/apollo-v2024/theia3d-documentation/theia3d-dropdown-menus/settings-menu/setup-preferences.md), [run analysis](https://docs.theiamarkerless.com/apollo-v2024/troubleshooting/error-messages/pages/cjz7Ur6u2MovN5ASohgl#id-6.6.-run-analysis), and [save workspace](https://docs.theiamarkerless.com/apollo-v2024/troubleshooting/error-messages/pages/fuBTxVKbvavh0XLrjycG#id-5.5.-save-workspace).


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