Hi,
after installing template in my joomla 3.9, if i I click the "Template options" button .. I received the following error message:
"InvalidArgumentException: Specifica un formato di risposta valido, diverso da quello di HTML, come ad esempio json, raw, debug, ecc..."

If i install sj_bizshop_quickstart_j39_v3.9.0.zip, it works correctly. Please can you help me? It's very urgent for me and my customer.
Let me know, thanks
regards

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