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MySQL error code

MySQL error 3987

MySQL server error 3987 is ER_FUNCTION_DOES_NOT_SUPPORT_CHARACTER_SET, reported with SQLSTATE HY000.

The function %s does not support the character set '%s'.
Error3987
NameER_FUNCTION_DOES_NOT_SUPPORT_CHARACTER_SET
SQLSTATEHY000
GroupServer errors

Source: MySQL 8.4 Error Reference