use urlencode not rawurlencode

apps/files_external/lib/smb.php

@@ -45,7 +45,7 @@ class SMB extends \OC\Files\Storage\StreamWrapper{
 		if (substr($path, -1)=='/') {
 			$path=substr($path, 0, -1);
 		}
-		$path = rawurlencode($path);
+		$path = urlencode($path);
 		return 'smb://'.$this->user.':'.$this->password.'@'.$this->host.$this->share.$this->root.$path;
 	}