3 warnings after publish (mime_content_type & Cannot modify header information)

  • The postings are successfully shared on mastodon but I get 3 warnings after publishing posts:

    Warning: mime_content_type(): Failed identify data 0:(null) in /www/htdocs/[MY-PATH]/wp/wp-content/plugins/wp-mastodon-share/client.php on line 86

    Warning: Cannot modify header information – headers already sent by (output started at /www/htdocs/[MY-PATH]/wp/wp-content/plugins/wp-mastodon-share/client.php:86) in /www/htdocs/[MY-PATH]/wp/wp-admin/post.php on line 198

    Warning: Cannot modify header information – headers already sent by (output started at /www/htdocs/[MY-PATH]/wp/wp-content/plugins/wp-mastodon-share/client.php:86) in /www/htdocs/[MY-PATH]/wp/wp-includes/pluggable.php on line 1219

    The page I need help with: [log in to see the link]

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