Error displayed in console of browser when using Database Join element

[cheyennemtnman]

I get an error on the console which occurs each time I select value in a DBJ dropdown.

element.js:3 Uncaught TypeError: Cannot read properties of null (reading 'destroy')

Has anyone else come across this... after two entries the DBJ element is disabled...


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Full Error Message in Console
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Uncaught TypeError: Cannot read properties of null (reading 'destroy')
at CloneObject.cloned (element.js:3:5314)
at e.extend.$owner [as $caller] (mootools-core.js?fccda0e5ad594c8953e4d439b8e7f517:38:495)
at CloneObject.a [as parent] (mootools-core.js?fccda0e5ad594c8953e4d439b8e7f517:38:89)
at CloneObject.cloned (databasejoin-min.js:1:14118)
at e.extend.$owner (mootools-core.js?fccda0e5ad594c8953e4d439b8e7f517:38:495)
at Object.<anonymous> (form.js:1:36469)
at Array.forEach (<anonymous>)
at Function.forEach (mootools-core.js?fccda0e5ad594c8953e4d439b8e7f517:5:460)
at Array.each (mootools-core.js?fccda0e5ad594c8953e4d439b8e7f517:9:303)
at Object.duplicateGroup (form.js:1:36450)
cloned @ element.js:3
e.extend.$owner @ mootools-core.js?fccda0e5ad594c8953e4d439b8e7f517:38
a @ mootools-core.js?fccda0e5ad594c8953e4d439b8e7f517:38
cloned @ databasejoin-min.js:1
e.extend.$owner @ mootools-core.js?fccda0e5ad594c8953e4d439b8e7f517:38
(anonymous) @ form.js:1
(anonymous) @ mootools-core.js?fccda0e5ad594c8953e4d439b8e7f517:5
each @ mootools-core.js?fccda0e5ad594c8953e4d439b8e7f517:9
duplicateGroup @ form.js:1
e.extend.$owner @ mootools-core.js?fccda0e5ad594c8953e4d439b8e7f517:38
(anonymous) @ form.js:1
exec @ jquery.ba-throttle-debounce.js:149
wrapper @ jquery.ba-throttle-debounce.js:161
dispatch @ jquery.min.js?fccda0e5ad594c8953e4d439b8e7f517:2
v.handle @ jquery.min.js?fccda0e5ad594c8953e4d439b8e7f517:2