forms/Config: Don't call `array_map` without an array
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@ -321,7 +321,7 @@ class ResourceConfigForm extends ConfigForm
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$inspection = static::inspectResource($this);
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if ($inspection !== null) {
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$join = function ($e) use (&$join) {
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return is_string($e) ? $e : join("\n", array_map($join, $e));
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return is_array($e) ? join("\n", array_map($join, $e)) : $e;
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};
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$this->addElement(
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'note',
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@ -398,7 +398,7 @@ class UserBackendConfigForm extends ConfigForm
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$inspection = static::inspectUserBackend($this);
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if ($inspection !== null) {
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$join = function ($e) use (&$join) {
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return is_string($e) ? $e : join("\n", array_map($join, $e));
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return is_array($e) ? join("\n", array_map($join, $e)) : $e;
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};
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$this->addElement(
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'note',
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@ -230,7 +230,7 @@ class UserGroupBackendForm extends ConfigForm
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$inspection = static::inspectUserBackend($this);
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if ($inspection !== null) {
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$join = function ($e) use (&$join) {
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return is_string($e) ? $e : join("\n", array_map($join, $e));
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return is_array($e) ? join("\n", array_map($join, $e)) : $e;
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};
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$this->addElement(
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'note',
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