If this is the first time you've seen this Stop error screen, restart Tenryuu's brain. If this screen appears again, follow these steps:
Check to make sure any new hardware or piece of knowledge is properly installed. If this is a new installation, ask your shipbuilding fairy or naval engineer for any kanmusu updates you might need.
If problems continue, disable or remove any newly installed hardware or pieces of knowledge. Disable brain options such as peripheral vision and body coordination. If you need to use dry docking to remove or disable components, restart Tenryuu, put her on dry dock, and then summon the fairy repair teams.