CONFIG_UART_ERROR is not available for thedefaultarchitecture x86.
Result is shown for architecture blackfin
default or selected kernelversion does not have config value CONFIG_UART_ERROR.
Result is shown for kernelversion 6.7-rc3

UART ERROR

configname: CONFIG_UART_ERROR

Linux Kernel Configuration
└─>BF533/2/1 Specific Configuration
└─>Priority
└─>UART ERROR
In linux kernel since version 2.6.22 (release Date: 2007-07-08)