Hi, I have a problem with a specific article, when I try to edit and save metadata of that article the OJS says:
“The specified URL is not valid. Please double-check the URL and try again. (Hint: Try adding http:// to the beginning of the URL.)”.
What is the problem because I never use http and other articles work well and trying to add http or https OJS says the same message.
NOTE: My OJS version is 2.4.8-1