I'm getting GPT-6.1 Sol errors after upgrading to Codex 0.163.0

After upgrading to Codex 0.163.0, I tried using gpt-6.1-sol but got this error: The 'gpt-6.1-sol' model is not supported when using Codex with a ChatGPT account. The model also doesn't appear in the /model menu. I'm using ChatGPT Plus. Has anyone else encountered this after upgrading? Is this a rollout issue, or is something broken with the latest version?After upgrading to Codex 0.163.0, I tried using gpt-6.1-sol but got this error:The 'gpt-6.1-sol' model is not supported when using Codex with a ChatGPT account.The model also doesn't appear in the /model menu.I'm using ChatGPT Plus. Has anyone else encountered this after upgrading? Is this a rollout issue, or is something broken with the latest version?