@csymlstd

I ran into this issue this morning on a new site build on a specific device, but was unable to reproduce it using a separate computer. What ultimately fixed it after a few hours of going crazy was restarting PHP. Perhaps the opcache/apcu cache needed to be purged for it to find the HttpClient class.

I ran into an issue with a site having a hyphenated search url previously saved, and could not save any additional settings changes. This patch will at least allow hyphens while allowing all valid characters is up for discussion.