diff --git a/Common/Attribute/AttributesBuilder.php b/Common/Attribute/AttributesBuilder.php
index a81c104..0667438 100644
--- a/Common/Attribute/AttributesBuilder.php
+++ b/Common/Attribute/AttributesBuilder.php
@@ -81,9 +81,6 @@ public function offsetSet($offset, $value): void
         }
 
         $this->attributes[$offset] = $this->normalizeValue($value);
-        //@todo "There SHOULD be a message printed in the SDK's log to indicate to the user that an attribute was
-        //       discarded due to such a limit. To prevent excessive logging, the message MUST be printed at most
-        //       once per <thing> (i.e., not per discarded attribute)."
     }
 
     /**
diff --git a/Metrics/Meter.php b/Metrics/Meter.php
index 0f4cceb..db3798f 100644
--- a/Metrics/Meter.php
+++ b/Metrics/Meter.php
@@ -81,7 +81,7 @@ public function updateConfigurator(Configurator $configurator): void
         $this->config = $configurator->resolve($this->instrumentationScope);
 
         $startTimestamp = $this->clock->now();
-        foreach ($this->instruments->observers[self::instrumentationScopeId($this->instrumentationScope)] as [$instrument, $stalenessHandler, $r]) {
+        foreach ($this->instruments->observers[self::instrumentationScopeId($this->instrumentationScope)] ?? [] as [$instrument, $stalenessHandler, $r]) {
             if ($this->config->isEnabled() && $r->dormant) {
                 $this->metricFactory->createAsynchronousObserver(
                     $this->registry,
@@ -98,7 +98,7 @@ public function updateConfigurator(Configurator $configurator): void
                 $r->dormant = true;
             }
         }
-        foreach ($this->instruments->writers[self::instrumentationScopeId($this->instrumentationScope)] as [$instrument, $stalenessHandler, $r]) {
+        foreach ($this->instruments->writers[self::instrumentationScopeId($this->instrumentationScope)] ?? [] as [$instrument, $stalenessHandler, $r]) {
             if ($this->config->isEnabled() && $r->dormant) {
                 $this->metricFactory->createSynchronousWriter(
                     $this->registry,