Failed to clone website: Failed to generate recreation

When I run copy, this error occurs while the webpage is in progress. Any website is the same.
I only have ANTHROPIC_SPI_KEY that I haven't added, and it's the same with any model.

Start by reproducing the copy flow while the webpage is in progress, using the reported model configuration and noting the full error output. Trace the failed recreation-generation path and determine whether the missing ANTHROPIC_SPI_KEY explains the failure; done means the flow either completes or reports a clear actionable configuration error.

Written by the indexing model from the issue text.