Hello,
Well it’s a known issue for some users. The stability for the feed generation will be improved in the next update (expected beginning of next week).
But the first thing you could try is to increase your WP_MEMORY_LIMIT. Here is the procedure to do that:
To increase the WP Memory Limit, you need to edit your wp-config.php file. This file normally resides in the root folder of your website.
1) Search for your wp-config.php file.
2) If you don’t have a backup of this file, please make one before you edit this file.
3) Open the wp-config.php file in edit mode.
4) Look for the words “WP_MEMORY_LIMIT”.
5) If you found them, increase the value behind this limit to at least ‘512MB’.
6) If you can’t find the WP_MEMORY_LIMIT setting it the file, look for “That’s all, stop editing! Happy blogging” row.
7) Just before this row, add the following text to the file: “define( ‘WP_MEMORY_LIMIT’, ‘512M’ );”.
8) Try generating your feed again.
If that didn’t work you could try increasing the memory to 1024M or even 2048M.
For more detailed information about increasing the WP_MEMORY_LIMIT, please read https://www.wpbeginner.com/wp-tutorials/fix-wordpress-memory-exhausted-error-increase-php-memory/
If that didn’t work please try to see if you get an error message in your browsers console tab. To open this tab please try the following:
To open the Browser Console Tab press, depending on your preferred browser: CNTRL+SHFT+J (for Chrome) CNTR+SHFT+K (for Firefox) or F12 (for Explorer). If you work on a Mac: (CMD+OPT+J for Chrome or CMD+OPT+K for Firefox). This should open a Console Tab on your browser. After it is open, perform the action that fails, wait about a minute and see of you get any message on the console tab that looks like an error message. Make a screenshot of the Console Tab and send that to me.
