Media Library Error “An error occurred in the upload. Please try again later.”

Hello,
I’m new for WordPress theme developing.
I develop new theme and test it in localhost.
when my theme active WordPress Media Library not working and get following error
“An error occurred in the upload. Please try again later.”

when default theme active it media uploader work fine.

in my theme, I disable Gutenberg Editor using following code.

add_filter("use_block_editor_for_post_type", "disable_gutenberg_editor");
function disable_gutenberg_editor()
{
return false;
}

and I add post-thumbnails support using following codes.
add_theme_support( 'post-thumbnails' );

I cant figure this error please help fix this
Thanks

• This topic was modified 2 years, 8 months ago by wsrworld.