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[WP Quiz Pro] Failed Activation

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I tried to install the free version of WP quiz, but is will not activated. Each time i try I get an error message.

Plugin could not be activated because it triggered a fatal error.

Fatal error: Cannot declare class PW_CMB2_Field_Select2, because the name is already in use in [site url plugins folder] wp-content/plugins/wp-quiz/includes/libs/cmb-field-select2/cmb-field-select2.php

Any ideas?

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Thank you for contacting MyThemeShop today.

Try asking your hosting provider to ensure that the PHP version on the server is at least version 7 or above.
Also deactivate all other plugins while activating WP Quiz plugin.

Looking forward to helping you. Thank you.

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