error on line 1055 at column 9: PCDATA invalid Char value 1

I don’t see the error on you site. where are you seeing it? is that the full error message?

The error comes on XML feed. There has to be an easy fix. I can’t go and delete tons of posts.

error on line 902 at column 42: PCDATA invalid Char value 2

how are you accessing the feed?

https://customer-supportstaffing.com/simplyhired.xml

Where is the xml file coming from? You must be using a plugin to generate that as it is not native WordPress functionality. Once you have found out which plugin you are using, I suggest you post a support question on the forum for that plugin.

As an example if you are using the WP-SimplyHired API plugin (my best guess, but I have no way of knowing for sure), post your issue including as much relevant information as possible at: https://www.ads-software.com/support/plugin/wp-simplyhired-api If it is that one, bear in mind that the plugin has not been updated for three years so may have been abandoned without outstanding issues being fixed. Of you are using a different plugin, post at the relevant forum for that plugin.

yes but there is a character or language causing the error…what is it

I don’t know. I have never used anything that creates a feed for simplyhired. The author or other users of whichever plugin you are using may have seen a similar error and may know how to to fix it.