diff --git a/eclipse-extensions/org.springframework.ide.eclipse.boot.refactoring/src/org/springframework/ide/eclipse/boot/refactoring/ConvertYamlToPropertiesRefactoring.java b/eclipse-extensions/org.springframework.ide.eclipse.boot.refactoring/src/org/springframework/ide/eclipse/boot/refactoring/ConvertYamlToPropertiesRefactoring.java
index 04a1aa7ed..8fbde189a 100644
--- a/eclipse-extensions/org.springframework.ide.eclipse.boot.refactoring/src/org/springframework/ide/eclipse/boot/refactoring/ConvertYamlToPropertiesRefactoring.java
+++ b/eclipse-extensions/org.springframework.ide.eclipse.boot.refactoring/src/org/springframework/ide/eclipse/boot/refactoring/ConvertYamlToPropertiesRefactoring.java
@@ -11,8 +11,7 @@
 package org.springframework.ide.eclipse.boot.refactoring;
 
 import java.io.IOException;
-import java.io.InputStream;
-import java.io.InputStreamReader;
+import java.io.StringReader;
 import java.io.StringWriter;
 import java.util.Map;
 import java.util.Properties;
@@ -30,6 +29,7 @@ import org.eclipse.ltk.core.refactoring.RefactoringStatus;
 import org.eclipse.ltk.core.refactoring.TextFileChange;
 import org.eclipse.ltk.core.refactoring.resource.RenameResourceChange;
 import org.eclipse.text.edits.ReplaceEdit;
+import org.springsource.ide.eclipse.commons.frameworks.core.util.IOUtil;
 import org.springsource.ide.eclipse.commons.livexp.util.ExceptionUtil;
 import org.yaml.snakeyaml.LoaderOptions;
 import org.yaml.snakeyaml.Yaml;
@@ -86,80 +86,70 @@ public class ConvertYamlToPropertiesRefactoring extends Refactoring {
 	public RefactoringStatus checkFinalConditions(IProgressMonitor pm)
 			throws CoreException, OperationCanceledException {
 		RefactoringStatus status = new RefactoringStatus();
+		String yamlContent = null;
 		try {
-			if (hasComments(yamlFile)) {
-				status.merge(RefactoringStatus.createWarningStatus("The yaml file has comments, which will be lost in the refactoring!"));
-			}
+			yamlContent = IOUtil.toString(yamlFile.getContents());
 		} catch (Exception e) {
 			status.merge(RefactoringStatus.create(ExceptionUtil.status(e, "Problems reading file: "+yamlFile.getFullPath())));
 			return status;
 		}
 
-		try (InputStream content = yamlFile.getContents()) {
-			for (Object d : new Yaml().loadAll(yamlFile.getContents())) {
-				if (d instanceof Map) {
-					// Add doc divider if not empty
-					@SuppressWarnings("unchecked")
-					Map<String, ?> o = (Map<String, ?>) d;
-					try {
-						YamlToPropertiesConverter converter = new YamlToPropertiesConverter(o);
-						Properties props = converter.getProperties();
-						StringWriter write = new StringWriter();
-						props.store(write, null);
-						write.flush();
-						write.close();
-						if (!propsContent.isEmpty()) {
-							propsContent.append("#---\n");
-						}
-						// Skip over the date header. Comments are not present but date header is.
-						if (write.getBuffer().charAt(0) == '#') {
-							int idx = write.getBuffer().indexOf("\n");
-							this.propsContent.append(idx >= 0 && idx < write.getBuffer().length() ? write.getBuffer().substring(idx + 1) : write.getBuffer().toString());
-						} else {
-							this.propsContent.append(write.getBuffer().toString());
-						}
-						status.merge(converter.getStatus());
-					} catch (IOException e) {
-						status.merge(RefactoringStatus.create(ExceptionUtil.status(e, "Problems writing to .properties file: "+propsFile.getFullPath())));
-					}
-				} else if (d == null) {
+		if (hasComments(yamlContent)) {
+			status.merge(RefactoringStatus.createWarningStatus("The yaml file has comments, which will be lost in the refactoring!"));
+		}
+
+		for (Object d : new Yaml().loadAll(new StringReader(yamlContent))) {
+			if (d instanceof Map) {
+				// Add doc divider if not empty
+				@SuppressWarnings("unchecked")
+				Map<String, ?> o = (Map<String, ?>) d;
+				try {
+					YamlToPropertiesConverter converter = new YamlToPropertiesConverter(o);
+					Properties props = converter.getProperties();
+					StringWriter write = new StringWriter();
+					props.store(write, null);
+					write.flush();
+					write.close();
 					if (!propsContent.isEmpty()) {
 						propsContent.append("#---\n");
 					}
+					// Skip over the date header. Comments are not present but date header is.
+					if (write.getBuffer().charAt(0) == '#') {
+						int idx = write.getBuffer().indexOf("\n");
+						this.propsContent.append(idx >= 0 && idx < write.getBuffer().length() ? write.getBuffer().substring(idx + 1) : write.getBuffer().toString());
+					} else {
+						this.propsContent.append(write.getBuffer().toString());
+					}
+					status.merge(converter.getStatus());
+				} catch (IOException e) {
+					status.merge(RefactoringStatus.create(ExceptionUtil.status(e, "Problems writing to .properties file: "+propsFile.getFullPath())));
+				}
+			} else if (d == null) {
+				if (!propsContent.isEmpty()) {
+					propsContent.append("#---\n");
 				}
 			}
-		} catch (Exception e) {
-			status.merge(RefactoringStatus.create(ExceptionUtil.status(e, "Problems parsing as a .yaml file: "+yamlFile.getFullPath())));
 		}
 		return status;
 	}
 
-	private boolean hasComments(IFile yamlFile) throws Exception {
-		InputStream is = null;
-		try {
-			is = yamlFile.getContents();
-			LoaderOptions loaderOptions = new LoaderOptions();
-			loaderOptions.setProcessComments(true);
-			boolean hasComments = false;
-			for (Event e : new Yaml(loaderOptions).parse(new InputStreamReader(is))) {
-				if (e instanceof StreamEndEvent) {
-					inputTextLen = e.getEndMark().getIndex();
-				}
-				if (!hasComments && e instanceof CommentEvent ce) {
-					if (ce.getCommentType() == CommentType.BLANK_LINE) {
-						// document separator
-					} else {
-						hasComments = true;
-					}
+	private boolean hasComments(String yamlContent) {
+		LoaderOptions loaderOptions = new LoaderOptions();
+		loaderOptions.setProcessComments(true);
+		boolean hasComments = false;
+		for (Event e : new Yaml(loaderOptions).parse(new StringReader(yamlContent))) {
+			if (e instanceof StreamEndEvent) {
+				inputTextLen = e.getEndMark().getIndex();
+			}
+			if (!hasComments && e instanceof CommentEvent ce) {
+				if (ce.getCommentType() == CommentType.BLANK_LINE) {
+					// document separator
+				} else {
+					hasComments = true;
 				}
 			}
-			return hasComments;
-		} catch (Throwable t) {
-			if (is != null) {
-				is.close();
-			}
-			return true;
 		}
+		return hasComments;
 	}
 
 	@Override
diff --git a/headless-services/commons/commons-language-server/src/main/java/org/springframework/ide/vscode/commons/languageserver/composable/CompositeLanguageServerComponents.java b/headless-services/commons/commons-language-server/src/main/java/org/springframework/ide/vscode/commons/languageserver/composable/CompositeLanguageServerComponents.java
index a57808474..793e25a90 100644
--- a/headless-services/commons/commons-language-server/src/main/java/org/springframework/ide/vscode/commons/languageserver/composable/CompositeLanguageServerComponents.java
+++ b/headless-services/commons/commons-language-server/src/main/java/org/springframework/ide/vscode/commons/languageserver/composable/CompositeLanguageServerComponents.java
@@ -184,14 +184,16 @@ public class CompositeLanguageServerComponents implements LanguageServerComponen
 			@Override
 			public List<? extends WorkspaceSymbol> handle(DocumentSymbolParams params) {
 				TextDocument doc = server.getTextDocumentService().getLatestSnapshot(params.getTextDocument().getUri());
-				LanguageId language = doc.getLanguageId();
-				List<LanguageServerComponents> subComponents = componentsByLanguageId.get(language);
-				if (subComponents != null) {
-					return subComponents.stream()
-							.map(sc -> sc.getDocumentSymbolProvider())
-							.filter(ds -> ds.isPresent())
-							.flatMap(ds -> ds.get().handle(params).stream())
-							.collect(Collectors.toList());
+				if (doc != null) {
+					LanguageId language = doc.getLanguageId();
+					List<LanguageServerComponents> subComponents = componentsByLanguageId.get(language);
+					if (subComponents != null) {
+						return subComponents.stream()
+								.map(sc -> sc.getDocumentSymbolProvider())
+								.filter(ds -> ds.isPresent())
+								.flatMap(ds -> ds.get().handle(params).stream())
+								.collect(Collectors.toList());
+					}
 				}
 				//No applicable subEngine...
 				return Collections.emptyList();