diff --git a/headless-services/jdt-ls-extension/org.springframework.tooling.jdt.ls.commons/src/org/springframework/tooling/jdt/ls/commons/java/JavaData.java b/headless-services/jdt-ls-extension/org.springframework.tooling.jdt.ls.commons/src/org/springframework/tooling/jdt/ls/commons/java/JavaData.java
index 8a0edb693..049ac89ce 100644
--- a/headless-services/jdt-ls-extension/org.springframework.tooling.jdt.ls.commons/src/org/springframework/tooling/jdt/ls/commons/java/JavaData.java
+++ b/headless-services/jdt-ls-extension/org.springframework.tooling.jdt.ls.commons/src/org/springframework/tooling/jdt/ls/commons/java/JavaData.java
@@ -69,6 +69,7 @@ public class JavaData {
 				return createTypeData((IType) element);
 			}
 		} catch (Exception e) {
+			logger.log("Failed to fetch type data for element witn key: " + bindingKey);
 			logger.log(e);
 		}
 		return null;
diff --git a/headless-services/spring-boot-language-server/src/main/java/org/springframework/ide/vscode/boot/app/SpringSymbolIndex.java b/headless-services/spring-boot-language-server/src/main/java/org/springframework/ide/vscode/boot/app/SpringSymbolIndex.java
index dba7f3fa0..ee3356526 100644
--- a/headless-services/spring-boot-language-server/src/main/java/org/springframework/ide/vscode/boot/app/SpringSymbolIndex.java
+++ b/headless-services/spring-boot-language-server/src/main/java/org/springframework/ide/vscode/boot/app/SpringSymbolIndex.java
@@ -547,7 +547,7 @@ public class SpringSymbolIndex implements InitializingBean {
 	}
 	
 	public Stream<WorkspaceSymbol> getSymbols(Predicate<EnhancedSymbolInformation> filter) {
-		return symbols.parallelStream()
+		return symbols.stream()
 			.filter(filter)
 			.map(enhanced -> enhanced.getSymbol());
 	}
diff --git a/headless-services/spring-boot-language-server/src/main/java/org/springframework/ide/vscode/boot/properties/completions/PropertiesCompletionProposalsCalculator.java b/headless-services/spring-boot-language-server/src/main/java/org/springframework/ide/vscode/boot/properties/completions/PropertiesCompletionProposalsCalculator.java
index 2a8937466..e950e190d 100644
--- a/headless-services/spring-boot-language-server/src/main/java/org/springframework/ide/vscode/boot/properties/completions/PropertiesCompletionProposalsCalculator.java
+++ b/headless-services/spring-boot-language-server/src/main/java/org/springframework/ide/vscode/boot/properties/completions/PropertiesCompletionProposalsCalculator.java
@@ -339,7 +339,7 @@ public class PropertiesCompletionProposalsCalculator {
 			Collection<Match<PropertyInfo>> matches = findMatches(prefix);
 			if (matches!=null && !matches.isEmpty()) {
 				ArrayList<ICompletionProposal> proposals = new ArrayList<ICompletionProposal>(matches.size());
-				matches.parallelStream().forEach(match -> {
+				matches.stream().forEach(match -> {
 					DocumentEdits docEdits;
 					try {
 						docEdits = LazyProposalApplier.from(() -> {
diff --git a/headless-services/spring-boot-language-server/src/main/java/org/springframework/ide/vscode/boot/yaml/completions/ApplicationYamlAssistContext.java b/headless-services/spring-boot-language-server/src/main/java/org/springframework/ide/vscode/boot/yaml/completions/ApplicationYamlAssistContext.java
index 94af8b4e9..b81298c7b 100644
--- a/headless-services/spring-boot-language-server/src/main/java/org/springframework/ide/vscode/boot/yaml/completions/ApplicationYamlAssistContext.java
+++ b/headless-services/spring-boot-language-server/src/main/java/org/springframework/ide/vscode/boot/yaml/completions/ApplicationYamlAssistContext.java
@@ -466,7 +466,7 @@ public abstract class ApplicationYamlAssistContext extends AbstractYamlAssistCon
 			Collection<Match<PropertyInfo>> matchingProps = indexNav.findMatching(query);
 			if (!matchingProps.isEmpty()) {
 				ArrayList<ICompletionProposal> completions = new ArrayList<ICompletionProposal>();
-				matchingProps.parallelStream().forEach(match -> {
+				matchingProps.stream().forEach(match -> {
 					try {
 						DocumentEdits edits = createEdits(doc, node, offset, query, match);
 						ScoreableProposal completion = completionFactory.property(