Error: resources should be either (a) a string or (b) an array of string or objects

I have a trial that branches. In the branched ‘instructions’ routine i have inserted a ‘Resource Manager’ component and a custom ‘Code’ component as instructed in the “Specify the files to download at the start” documentation page.

But when i run the experiment online, everything works fine until i get to the trial branch. There, i get the following message:

when preparing resources for experiment: testXP_3_14
resources should be either (a) a string or (b) an array of string or objects

Interestingly, i use the same format as i do to initiate the ‘additional resources’ in the Properties>Online tab (which works great):

folder_name/image1
folder_name/image2
folder_name/image3
...

Please advise. Thank you!!

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I encountered the same error here. Any workaround to resolve this issue?

How are you separating the resources? You might need to use a comma.

I haven’t tried the new component myself yet but I will be using it soon.

I have the same problem. has there been any solution?

Same!

I’ve just tried to add a custom item to a resource manager component.

itemList failed (it was looking for a file called itemList)
$itemList failed (PsychoPy objected to the dollar symbol)

No solution yet.

I did find a work-around, but it has been a while and i don’t remember exactly what it was. Once i get my old computer up and running i will have a look.

My workaround was to use a code component for the custom file:

psychoJS._serverManager.prepareResources([
{ name: (itemFile), path: (itemFile) }
]);
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