jquery JQuery error in prestashop 1.7.8.6

[RicRey]

My prestashop has a bug in JQuery, how can I solve it? This drives me crazy, apparently it makes other modules fail...

 

<input id="username_addons" name="username_addons" type="text" value autocomplete="off" class="form-control ac_input">
upgrade.js:729 Uncaught TypeError: $(...).die is not a function
    at Object.success (upgrade.js:729:29)
    at c (jquery-3.5.1.min.js:2:28294)
    at Object.fireWith [as resolveWith] (jquery-3.5.1.min.js:2:29039)
    at l (jquery-3.5.1.min.js:2:79800)
    at XMLHttpRequest.<anonymous> (jquery-3.5.1.min.js:2:82254)
upgrade.js:671 Uncaught TypeError: $(...).die is not a function
    at Object.success (upgrade.js:671:29)
    at c (jquery-3.5.1.min.js:2:28294)
    at Object.fireWith [as resolveWith] (jquery-3.5.1.min.js:2:29039)
    at l (jquery-3.5.1.min.js:2:79800)
    at XMLHttpRequest.<anonymous> (jquery-3.5.1.min.js:2:82254)

[Nickz]

since when? PS Version, Theme, doing what the one click update from?

[musicmaster]

Move your mouse over the word "upgrade.js:671" at the right side to see its full path.