FIX Handle calling Deprecation::notice() before manifests are available

src/Core/Injector/InjectorLoader.php

@@ -9,6 +9,8 @@ use BadMethodCallException;
  */
 class InjectorLoader
 {
+    public const NO_MANIFESTS_AVAILABLE = 'No injector manifests available';
+
     /**
      * @internal
      * @var self
@@ -42,7 +44,7 @@ class InjectorLoader
             );
         }
         if (empty($this->manifests)) {
-            throw new BadMethodCallException("No injector manifests available");
+            throw new BadMethodCallException(self::NO_MANIFESTS_AVAILABLE);
         }
         return $this->manifests[count($this->manifests) - 1];
     }

src/Dev/Deprecation.php

@@ -2,8 +2,11 @@
 
 namespace SilverStripe\Dev;
 
+use BadMethodCallException;
+use Exception;
 use SilverStripe\Control\Director;
 use SilverStripe\Core\Environment;
+use SilverStripe\Core\Injector\InjectorLoader;
 use SilverStripe\Core\Manifest\Module;
 
 /**
@@ -234,6 +237,14 @@ class Deprecation
             } else {
                 user_error($string, self::$notice_level);
             }
+        } catch (BadMethodCallException $e) {
+            if ($e->getMessage() === InjectorLoader::NO_MANIFESTS_AVAILABLE) {
+                // noop
+                // this can happen when calling Deprecation::notice() before manifests are available, i.e.
+                // some of the code involved in creating the manifests calls Deprecation::notice()
+            } else {
+                throw $e;
+            }
         } finally {
             static::$inside_notice = false;
         }