Error in hidden DS-Store file

I’m getting the following errors at the top of my apge:

Warning: call_user_func() expects parameter 1 to be a valid callback, class ‘.DS_Store’ not found in /home/content/p3pnexwpnas10_data01/76/2535376/html/wp-content/themes/parallelus-incentive/framework/includes/load-functions.php on line 34

Warning: session_start(): Cannot send session cookie – headers already sent by (output started at /home/content/p3pnexwpnas10_data01/76/2535376/html/wp-content/themes/parallelus-incentive/data-types/.DS_Store:1) in /home/content/p3pnexwpnas10_data01/76/2535376/html/wp-content/themes/parallelus-incentive/extensions/contact-fields/inc/functions.php on line 3

Warning: session_start(): Cannot send session cache limiter – headers already sent (output started at /home/content/p3pnexwpnas10_data01/76/2535376/html/wp-content/themes/parallelus-incentive/data-types/.DS_Store:1) in /home/content/p3pnexwpnas10_data01/76/2535376/html/wp-content/themes/parallelus-incentive/extensions/contact-fields/inc/functions.php on line 3

I cannot edit the faulty .DS_Store file as it’s hidden. I’ve tried loading backed up versions of the theme to no avail. I’ve also tried reinstalling wordpress. Any solutions?