It's better / recommended to use recent few versions of jQuery / jQueryUI.
pqgrid is compatible only with jQueryUI >= v1.11.4
Compatiblity between jQuery and jQueryUI also needs to be considered.
e.g, jQueryUI 1.11.4 is compatible with jQuery < v3.2, so if you are using jQuery >= v3.2, then you have to choose jQueryUI v1.12.x
Hope it helps.