CSV export errors

Hi,

I get some errors in my CSV file, exported from my dashboard.

2,"2018-07-31 01:28:25",read,"My data line 2"
<br />
<b>Notice</b>:  Undefined offset: 2 in <b>/home/quantumaek/www/wp-content/plugins/contact-form-cfdb7/inc/export-csv.php</b> on line <b>58</b><br />
<br />
<b>Notice</b>:  Undefined offset: 2 in <b>/home/quantumaek/www/wp-content/plugins/contact-form-cfdb7/inc/export-csv.php</b> on line <b>58</b><br />
<br />
<b>Notice</b>:  Undefined offset: 2 in <b>/home/quantumaek/www/wp-content/plugins/contact-form-cfdb7/inc/export-csv.php</b> on line <b>58</b><br />
3,"2018-08-03 12:46:00",read,"My data line 3"
<br />
<b>Notice</b>:  Undefined offset: 3 in <b>/home/quantumaek/www/wp-content/plugins/contact-form-cfdb7/inc/export-csv.php</b> on line <b>58</b><br />
<br />
<b>Notice</b>:  Undefined offset: 3 in <b>/home/quantumaek/www/wp-content/plugins/contact-form-cfdb7/inc/export-csv.php</b> on line <b>58</b><br />
<br />
<b>Notice</b>:  Undefined offset: 3 in <b>/home/quantumaek/www/wp-content/plugins/contact-form-cfdb7/inc/export-csv.php</b> on line <b>58</b><br />
…

Can you help me troubleshooting this?

Thank you.