Google OAuth “invalid_grant” because of URL-encoded format
If Instead of decoding the the url received you copied directly the code and passed to your API you got “invalid_grant” error
4%2F0AWtgzh4NXVxRSQJgVpxtGoRaTs0Zekj1EUnB36svBWiBrUE0TbzazsxNs3b_NBPU4-L0em
Decode from URL-encoded format;
4/0AWtgzh4NXVxRSQJgVpxtGoRaTs0Zekj1EUnB36svBWiBrUE0TbzazsxNs3b_NBPU4-L0em
Send request after decoded as below;
The superglobals $_GET and $_REQUEST are already decoded. Using urldecode() on an element in $_GET or $_REQUEST could have unexpected and dangerous results.
You can get code value without decode URL in php example;
$_GET['code']
$request->get('code')
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