The error you are encountering indicates that Spine is unable to create a frame buffer of the specified size, which is likely too large for your GPU to handle. This issue can be caused by several factors, including outdated graphics drivers or attempting to export at a resolution that exceeds your GPU's capabilities.
Here are some steps you can take to resolve the issue:
Update Graphics Drivers: Ensure that you have the latest graphics drivers installed for your GPU. Outdated drivers can cause issues with rendering and exporting.
Reduce Export Resolution: Try reducing the resolution of your export. The error message indicates that the buffer size is extremely large (1651418x2386), which is likely too large for your GPU to handle. You can scale down your export settings to a more manageable size.
Check GPU Capabilities: Verify the maximum texture size and buffer size that your GPU can handle. This information can usually be found in the specifications for your GPU model.
Use a Different Version of Spine: If the issue persists, consider using a different version of Spine. Newer versions may have optimizations and bug fixes that could resolve the issue.
Check for Known Issues: There may be known issues related to exporting in the version of Spine you are using. You can check the Spine GitHub issues page for any related issues and potential fixes.
If none of these steps resolve the issue, you may need to provide additional details about your project and export settings for further assistance.