Need a help on sanitization

Honestly for the select field it’s not so important what the choices are for sanitizing the field and in fact what you are doing I don’t believe is a good idea if a user wants to filter your settings to add new options to the select field. More importantly you are looking to sanitize the output which is a string value. So using wp_strip_all_tags or even esc_html for the sanitize callback I believe would be best. Your input will still be sanitized for malicious code but also allow for easier tweaking via a child theme.

But in terms of what your reviewer is telling you is most likely you are using the personal_lite_select_callback function for multiple select options in the customizer some which have different values so they want you to make a new function for each.

Hata!: SQLSTATE[HY000] [1045] Access denied for user 'divattrend_liink'@'localhost' (using password: YES)