[Ext JS]11.14 SimXhr.js?_dc=1659315492151:65 Uncaught TypeError问题分析与解决

问题：

Uncaught TypeError: Cannot read properties of undefined (reading 'delay')
    at constructor.schedule (SimXhr.js?_dc=1659400019385:65:47)
    at constructor.send (SimXhr.js?_dc=1659400019385:83:16)
    at constructor.start (ext-all-rtl-debug.js?_dc=1659400019385:28127:13)
    at constructor.request (ext-all-rtl-debug.js?_dc=1659400019385:29220:28)
    at constructor.sendRequest (ext-all-rtl-debug.js?_dc=1659400019385:102828:40)
    at constructor.doRequest (ext-all-rtl-debug.js?_dc=1659400019385:102819:19)
    at constructor.read (ext-all-rtl-debug.js?_dc=1659400019385:102110:31)
    at constructor.doExecute (ext-all-rtl-debug.js?_dc=1659400019385:92544:32)
    at constructor.execute (ext-all-rtl-debug.js?_dc=1659400019385:92177:35)
    at constructor.flushLoad (ext-all-rtl-debug.js?_dc=1659400019385:100968:23)

发生场景：

定义了一个Grid，