Problems with master - serve/php

[Mimi0123456789]

Hello,

I 'm discovering w2ui and I try to use server/php files of w2ui-master
I have this error and don't find any solutions :

ERROR: Server communication failed.
EXPECTED: {total: 5, records: Array(1)}
OR: {error: true, message: 'error message'}
w2ui.min.js:357 Uncaught (in promise) TypeError: Cannot read properties of undefined (reading 'msgHTTPError')

Can you help me please ?

I tryed to define dataType = "JSON" but without success.

[vitmalina]

You server should return proper JSON back. The error message gives you a clue what it expects.