diff --git a/application/forms/Config/ResourceConfigForm.php b/application/forms/Config/ResourceConfigForm.php
index dc3565ed5..fe12aca6e 100644
--- a/application/forms/Config/ResourceConfigForm.php
+++ b/application/forms/Config/ResourceConfigForm.php
@@ -321,7 +321,7 @@ class ResourceConfigForm extends ConfigForm
             $inspection = static::inspectResource($this);
             if ($inspection !== null) {
                 $join = function ($e) use (&$join) {
-                    return is_string($e) ? $e : join("\n", array_map($join, $e));
+                    return is_array($e) ? join("\n", array_map($join, $e)) : $e;
                 };
                 $this->addElement(
                     'note',
diff --git a/application/forms/Config/UserBackendConfigForm.php b/application/forms/Config/UserBackendConfigForm.php
index 16ce4bdf9..8124e9d48 100644
--- a/application/forms/Config/UserBackendConfigForm.php
+++ b/application/forms/Config/UserBackendConfigForm.php
@@ -398,7 +398,7 @@ class UserBackendConfigForm extends ConfigForm
             $inspection = static::inspectUserBackend($this);
             if ($inspection !== null) {
                 $join = function ($e) use (&$join) {
-                    return is_string($e) ? $e : join("\n", array_map($join, $e));
+                    return is_array($e) ? join("\n", array_map($join, $e)) : $e;
                 };
                 $this->addElement(
                     'note',
diff --git a/application/forms/Config/UserGroup/UserGroupBackendForm.php b/application/forms/Config/UserGroup/UserGroupBackendForm.php
index 68e5ec6b2..bfc1ef575 100644
--- a/application/forms/Config/UserGroup/UserGroupBackendForm.php
+++ b/application/forms/Config/UserGroup/UserGroupBackendForm.php
@@ -230,7 +230,7 @@ class UserGroupBackendForm extends ConfigForm
             $inspection = static::inspectUserBackend($this);
             if ($inspection !== null) {
                 $join = function ($e) use (&$join) {
-                    return is_string($e) ? $e : join("\n", array_map($join, $e));
+                    return is_array($e) ? join("\n", array_map($join, $e)) : $e;
                 };
                 $this->addElement(
                     'note',