Tweak

Author: seratch

bolt/src/main/java/com/slack/api/bolt/service/builtin/AmazonS3InstallationService.java

@@ -46,13 +46,14 @@ public Initializer initializer() {
                 log.debug("AWS credentials loaded (access key id: {})", credentials.accessKeyId());
             }
             boolean bucketExists = false;
-            Exception error = null;
+            Exception ex = null;
             try (S3Client s3 = createS3Client()) {
                 bucketExists = s3.headBucket(HeadBucketRequest.builder().bucket(bucketName).build()) != null;
             } catch (Exception e) { // NoSuchBucketException etc.
-                error = e;
+                ex = e;
             }
             if (!bucketExists) {
+                String error = ex != null ? ex.getClass().getName() + ":" + ex.getMessage() : "-";
                 String message = "Failed to access the Amazon S3 bucket (name: " + bucketName + ", error: " + error + ")";
                 throw new IllegalStateException(message);
             }

bolt/src/main/java/com/slack/api/bolt/service/builtin/AmazonS3OAuthStateService.java

@@ -42,13 +42,14 @@ public Initializer initializer() {
                 log.debug("AWS credentials loaded (access key id: {})", credentials.accessKeyId());
             }
             boolean bucketExists = false;
-            Exception error = null;
+            Exception ex = null;
             try (S3Client s3 = createS3Client()) {
                 bucketExists = s3.headBucket(HeadBucketRequest.builder().bucket(bucketName).build()) != null;
             } catch (Exception e) { // NoSuchBucketException etc.
-                error = e;
+                ex = e;
             }
             if (!bucketExists) {
+                String error = ex != null ? ex.getClass().getName() + ":" + ex.getMessage() : "-";
                 String message = "Failed to access the Amazon S3 bucket (name: " + bucketName + ", error: " + error + ")";
                 throw new IllegalStateException(message);
             }