How to create a new site (locale: de-AT) based on another site (de) within same installation?

I manage a website with multiple languages. Each language has its own site and domain. Think: website.de and website.co.uk I have to add another site with different locale (de-AT) to the Craft CMS installation. It should run on website.at The Austrian site should be initialized exactly the same as the current German (de) site. Afterwards…

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QLSTATE[42S02]: Base table or view not found: 1146 Table ‘mysite.vgroup_testimonial’ doesn’t exist, query was: DESCRIBE `vgroup_testimonial`

I have installed an extension for testimonial by V Group Inc. after the installation when i tried to add testimonies, the extension was giving me this error SQLSTATE[42S02]: Base table or view not found: 1146 Table ‘mysite.vgroup_testimonial’ doesn’t exist, query was: DESCRIBE `vgroup_testimonial` screenshot please help link of the extension https://marketplace.magento.com/vgroup65-testimonial.html

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A problem about the relation between 1-oracle and 2-oracle PAC model

This problem is about two-oracle variant of the PAC model. Assume that positive and negative examples are now drawn from two separate distributions $\mathcal{D}_{+}$ and $\mathcal{D}_{-} .$ For an accuracy $(1-\epsilon),$ the learning algorithm must find a hypothesis $h$ such that: $$ \underset{x \sim \mathcal{D}_{+}}{\mathbb{P}}[h(x)=0] \leq \epsilon \text { and } \underset{x \sim \mathcal{D}_{-}}{\mathbb{P}}[h(x)=1] \leq…

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