Warning: call_user_func_array() expects parameter 1 to be a valid callback,

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WordPress

add_action('woocommerce_after_add_to_cart_button', array( $this, 'ci_cart_text') );

Warning: call_user_func_array() expects parameter 1 to be a valid callback, class 'Ci_Simple_Features' does not have a method 'ci_cart_text' in C:\xampp\htdocs\theme\wp-includes\class-wp-hook.php on line 287

please help me

Thanks

What I have tried:

I am trying to fix this issue. but still, i am tried