Trim / from SiteURL before sending to client (#3966)

utils/config.go

@@ -11,6 +11,7 @@ import (
 	"os"
 	"path/filepath"
 	"strconv"
+	"strings"
 
 	l4g "github.com/alecthomas/log4go"
 
@@ -218,7 +219,7 @@ func getClientConfig(c *model.Config) map[string]string {
 	props["BuildHashEnterprise"] = model.BuildHashEnterprise
 	props["BuildEnterpriseReady"] = model.BuildEnterpriseReady
 
-	props["SiteURL"] = *c.ServiceSettings.SiteURL
+	props["SiteURL"] = strings.TrimRight(*c.ServiceSettings.SiteURL, "/")
 	props["SiteName"] = c.TeamSettings.SiteName
 	props["EnableTeamCreation"] = strconv.FormatBool(c.TeamSettings.EnableTeamCreation)
 	props["EnableUserCreation"] = strconv.FormatBool(c.TeamSettings.EnableUserCreation)