I updated the plugin testimonials and gives me error

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I updated the plugin testimonials and gives me error 1
PickPlugins
Mar 11, 2016 02:48 PM 1 Answers General
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I've updated the testimonials plugin, and I get the following error in the frontend:
Warning: Invalid argument supplied for foreach () in

How can i fix it?

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I updated the plugin testimonials and gives me error 2
PickPlugins
Mar 11, 2016
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Can you please go edit Testimonial showcase and update/save settings once again.
Please check the option "Post query orderby" you have selected at least one option

Let  me know the result.

Best regards

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