Error with Contact db

Hi there,

Your plugin is working fine but when I download a xlsx file with the contact form db plugin (https://es.www.ads-software.com/plugins/contact-form-7-to-database-extension/ ) , I get an error , I found out that your plugin was making conflict, the xlsx file’s first line is on blank , then the CFDB’s programmer told me It was an output error, so I hope you can help me.

Thanks in advance

https://www.ads-software.com/plugins/wp-editor/