A lot of lines are not loaded – there is not enough memory

I ran into a problem when loading: "DataTables warning: table id=dom_dom-Invalid JSON response. For more information about this error, please see http://datatables.net/tn/1»
In the debugging window, "Network" writes: "Allowed memory size of 134217728 bytes exhausted (tried to allocate 20480 bytes) in <b>/home/a0250268/domains .....
." Is this a hosting restriction? Or a DataTable?
I put a restriction on the output of strings in the server script:

->where( 'id', 700, '<')

It worked.
Please tell me what to do?