Not enough information! What Apple device? What OS version is it running. What applicants causes the error?
And you posted in a forum area for Apple hardware made before 1998. I doubt yours is that old. Howeer, posting here means very few helpful people will see your post. Please "fill in the blanks" to get helpful answers and, in this case, we probably need to have the Hosts move your thread to a more active forum appropriate to your Apple preoduct.