Cannot modify header information - headers already sent

[jooola]

Describe the bug

I am having some warning/deprecation messages in the admin interface:

Deprecated: Required parameter $prelaunch follows optional parameter $dismissable in /var/www/html/web/app/plugins/radio-station/radio-station-admin.php on line 1269
Warning: Cannot modify header information - headers already sent by (output started at /var/www/html/web/app/plugins/radio-station/radio-station-admin.php:1269) in /var/www/html/web/-/wp-admin/includes/misc.php on line 1416
Warning: Cannot modify header information - headers already sent by (output started at /var/www/html/web/app/plugins/radio-station/radio-station-admin.php:1269) in /var/www/html/web/-/wp-includes/functions.php on line 6865
Warning: Cannot modify header information - headers already sent by (output started at /var/www/html/web/app/plugins/radio-station/radio-station-admin.php:1269) in /var/www/html/web/-/wp-admin/admin-header.php on line 9
Warning: Cannot modify header information - headers already sent by (output started at /var/www/html/web/app/plugins/radio-station/radio-station-admin.php:1269) in /var/www/html/web/-/wp-includes/option.php on line 1138
Warning: Cannot modify header information - headers already sent by (output started at /var/www/html/web/app/plugins/radio-station/radio-station-admin.php:1269) in /var/www/html/web/-/wp-includes/option.php on line 1139

Additional context

Wordpress 6.1.*
PHP 8.0 with apache (running inside docker)
Using the roots/bedrocks wordpress layout https://roots.io/bedrock/

[majick777]

@jooola For deprecation notices to be showing up you must have both WP_DEBUG and WP_DEBUG_DISPLAY turned on. The "headers already sent" notices are because the debug output from the deprecated notice is being output to the page. You can safely turn one of the debug switches off and ignore this issue.

Closing as this issue itself has already been fixed in the development version, so you can install that if you prefer: https://radiostation.pro/docs/faq/#how-do-i-install-the-latest-development-version-for-testing