fix: Handle all exceptions within Guzzle feature requester

fixes #225

Author: keelerm84

src/LaunchDarkly/Impl/Integrations/GuzzleFeatureRequester.php

@@ -4,6 +4,7 @@
 
 namespace LaunchDarkly\Impl\Integrations;
 
+use Exception;
 use GuzzleHttp\Client;
 use GuzzleHttp\Exception\BadResponseException;
 use GuzzleHttp\HandlerStack;
@@ -75,6 +76,9 @@ public function getFeature(string $key): ?FeatureFlag
                 $this->handleUnexpectedStatus($code, "GuzzleFeatureRequester::get");
             }
             return null;
+        } catch (Exception $e) {
+            $this->_logger->error("GuzzleFeatureRequester::get encountered an exception retrieving flag key {$key}: " . $e->getMessage());
+            return null;
         }
     }
 
@@ -99,6 +103,9 @@ public function getSegment(string $key): ?Segment
                 $this->handleUnexpectedStatus($code, "GuzzleFeatureRequester::get");
             }
             return null;
+        } catch (Exception $e) {
+            $this->_logger->error("GuzzleFeatureRequester::get encountered an exception retrieving segment key {$key}: " . $e->getMessage());
+            return null;
         }
     }
 
@@ -117,6 +124,9 @@ public function getAllFeatures(): ?array
             /** @psalm-suppress PossiblyNullReference (resolved in guzzle 7) */
             $this->handleUnexpectedStatus($e->getResponse()->getStatusCode(), "GuzzleFeatureRequester::getAll");
             return null;
+        } catch (Exception $e) {
+            $this->_logger->error("GuzzleFeatureRequester::getAll encountered an exception retrieving all flags: " . $e->getMessage());
+            return null;
         }
     }