Your system looks as if you have installed Wolfram Engine {{wolframEngineConfigSuggestion.suggestion.version}} on {{wolframEngineConfigSuggestion.os}}.
Your system looks like {{wolframEngineConfigSuggestion.os}}, but Wolfram Engine may not be installed or may not be activated.
Important: If Wolfram Engine is not activated prior to starting KeYmaera X, it is likely to fail and/or even crash the KeYmaera X server.