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Openemr 6 Installation

Hello I need help

I was install openemr 6 but i had a problem during this process

I need to organize the demographic data, ( I want to pass the postal code data from the “contact” area to the area of ​​"who") but when trying to move one of the data to change the area it appears:

DataTables warning: table id=my_data_table - Invalid JSON response. For more information about this error, please see http://datatables.net/tn/1

How can I repair this to be able to reorganize this section?

Thanks