If the “Recent Posts” widget on your Blogger blog has stopped working, it’s obvious you are still using the corrupt “recent posts widget for blogger“. The widget will probably be displaying “There was an error in this gadget” on your blog.
The widget is a third-party gadget and not from Blogger. Hence, Blogger cannot control these errors caused by the gadget authors. There are other alternatives you can use which include the recent posts widget for blogger with thumbnails.
I am currently using the Recent Posts Widget by Ziyush and it is working fine for me up till this very moment.
How To Add Recent Posts Widget To Blogger Blog
==> Log in to your Blogger dashboard
==> Go to “Layout“
==> Right on the sidebar, click on “Add Gadget“
==> Click on the “More Gadget” link. This will display gadgets contributed by third party developers for Blogger.
==> Type “Recent Posts” in the search box and hit the ENTER key
==> You will likely see three “Recent Posts” widgets from different third party developers.
==> Simply add the Recent Posts Widget by Ziyush
==> Customize it the way you want and SAVE.
View your blog and you should now see your recent posts displayed on the sidebar.
I hope it works for you.
You can also consider adding the floating share bar for Blogger blogs.