after loading vs code, and waiting as things process, 2 errors in SLDS Validator

[Matt-EnabledAnalytics]

Summary

I get two errors from vs code that pop up: Connection to server got closed. Server will not be restarted. And Client SLDX Validator: connection to server is erroring. read ECONNRESER Shutting down serve.

Steps To Reproduce:

1. Open vs code
2. wait
3. eventually errors popup

Expected result

no errors

Actual result

errors

Additional information

Feel free to attach a screenshot.

Salesforce Extension Version in VS Code: 2.0.12

Salesforce CLI Version: 2.125.2

OS and version: Windows 11 Home 25Hs 26200.8037 Windows Feature Experience Pack 1000.26100.300.0

VS Code version: 1.111.0

Most recent version of the extensions where this was working: don't recall (all say 1yr old)

[svc-idee-bot]

Thank you for filing this issue. We appreciate your feedback and will review the issue as soon as possible. Remember, however, that GitHub isn't a mechanism for receiving support under any agreement or SLA. If you require immediate assistance, contact Salesforce Customer Support.

[svc-idee-bot]

Hello @Matt-EnabledAnalytics 👋 It looks like you didn't provide all the required basic info in your issue.

If you haven't already, please provide the following info:
Salesforce Extension Version in VS Code:
Salesforce CLI Version:
OS and version:
VS Code version:
Most recent version of the extensions where this was working:

Here's an example of a set of required info that will pass the validation:
Salesforce Extension Version in VS Code: 60.13.0
Salesforce CLI Version: @salesforce/cli/2.42.6 darwin-arm64 node-v18.18.2
OS and version: MacOS Sonoma 14.5
VS Code version: 1.89.1
Most recent version of the extensions where this was working: 60.11.0

A few more things to check:

• Make sure you've provided detailed steps to reproduce your issue, as well as all error messages that you see.
  • A repository that clearly demonstrates the bug is ideal.
  • Error messages can be found in the Problems Tab, Output Tab, and from running Developer: Toggle Developer Tools in the command palette.
• Make sure you've installed the latest version of the Salesforce Extension Pack for VSCode. (docs)
• Search GitHub for existing related issues.

Thank you!

[Matt-EnabledAnalytics]

The 'supposed-missing-information' is clearly listed in the original post.

[Matt-EnabledAnalytics]

I have since updated my cli. Here are updated details. (this issue has been happening for a while)

Salesforce Extension Version in VS Code: 2.0.12
Salesforce CLI Version: @salesforce/cli/2.126.4 win32-x64 node-v22.22.0
OS and version: Windows 11 Home 25Hs 26200.8037 Windows Feature Experience Pack 1000.26100.300.0
VS Code version: 1.111.0
Most recent version of the extensions where this was working: don't recall (all say 1yr old)

2026-03-13 10:58:43.334 [info] Starting SLDS ...
2026-03-13 10:58:43.334 [info] Registering commands ...
2026-03-13 10:58:43.334 [info] Storing SLDS LSP server log in 'c:\Users\Ventas\AppData\Roaming\Code\User\workspaceStorage\1ead79532e1f386c88b0375d879c0ba9\salesforce.salesforce-vscode-slds/slds-extension.log'
2026-03-13 10:58:48.495 [info] SLDS Validator Started
2026-03-13 11:06:06.233 [info] [Error - 11:06:06 AM] Client SLDS Validator: connection to server is erroring.
read ECONNRESET
Shutting down server.
2026-03-13 11:06:06.235 [info] [Error - 11:06:06 AM] Connection to server got closed. Server will not be restarted.
2026-03-13 11:06:08.241 [info] [Error - 11:06:08 AM] Stopping server timed out
2026-03-13 11:06:08.242 [info] [Error - 11:06:08 AM] Stopping server failed
2026-03-13 11:06:08.255 [info] Error: Stopping the server timed out
at c:\Users\Ventas.vscode\extensions\salesforce.salesforce-vscode-slds-2.0.12\dist\extension.js:2:606753

Log file is full of errors for each .js file, such as:
Standard Commons Logging discovery in action with spring-jcl: please remove commons-logging.jar from classpath in order to avoid potential conflicts

. ____ _ __ _ _
/\ / ' __ _ () __ __ _ \ \ \
( ( )__ | '_ | '| | ' / ` | \ \ \
\/ )| |)| | | | | || (| | ) ) ) )
' || .__|| ||| |_, | / / / /
=========||==============|/=////

:: Spring Boot :: (v3.3.2)

2026-03-13T10:58:44.822-05:00 INFO 21488 --- [ main] com.salesforce.slds.lsp.ServerLauncher : Starting ServerLauncher v2.0.9-internal using Java 17.0.10 with PID 21488 (C:\Users\Ventas.vscode\extensions\salesforce.salesforce-vscode-slds-2.0.12\lsp-2.0.12-executable.jar started by Ventas in c:\Users\Ventas\WORKAREA\elemetal)
2026-03-13T10:58:44.828-05:00 INFO 21488 --- [ main] com.salesforce.slds.lsp.ServerLauncher : No active profile set, falling back to 1 default profile: "default"
2026-03-13T10:58:49.999-05:00 INFO 21488 --- [ main] com.salesforce.slds.lsp.ServerLauncher : Started ServerLauncher in 5.897 seconds (process running for 6.911)

And the file continually repeats for each javascript/html/css file with content like this:

2026-03-13T10:58:53.787-05:00 WARN 21488 --- [pool-2-thread-1] o.eclipse.lsp4j.jsonrpc.RemoteEndpoint : Notification threw an exception: {
"jsonrpc": "2.0",
"method": "textDocument/didOpen",
"params": {
"textDocument": {
"uri": "file:///c%3A/Users/Ventas/WORKAREA/elemetal/force-app/main/default/lwc/stripePaymentTest/stripePaymentTest.js",
"languageId": "javascript",
"version": 1,
"text": "<>"
}
}
}

java.util.NoSuchElementException: No value present
at java.base/java.util.Optional.get(Optional.java:143) ~[na:na]
at com.salesforce.slds.lsp.diagnostics.Diagnoser.runDiagnose(Diagnoser.java:109) ~[!/:2.0.9-internal]
at com.salesforce.slds.lsp.diagnostics.Diagnoser.diagnose(Diagnoser.java:64) ~[!/:2.0.9-internal]
at com.salesforce.slds.lsp.services.TextDocumentServiceImpl.diagnose(TextDocumentServiceImpl.java:143) ~[!/:2.0.9-internal]
at com.salesforce.slds.lsp.services.TextDocumentServiceImpl.didOpen(TextDocumentServiceImpl.java:64) ~[!/:2.0.9-internal]
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:na]
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77) ~[na:na]
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:na]
at java.base/java.lang.reflect.Method.invoke(Method.java:568) ~[na:na]
at org.eclipse.lsp4j.jsonrpc.services.GenericEndpoint.lambda$recursiveFindRpcMethods$0(GenericEndpoint.java:65) ~[org.eclipse.lsp4j.jsonrpc-0.23.1.jar!/:na]
at org.eclipse.lsp4j.jsonrpc.services.GenericEndpoint.notify(GenericEndpoint.java:160) ~[org.eclipse.lsp4j.jsonrpc-0.23.1.jar!/:na]
at org.eclipse.lsp4j.jsonrpc.RemoteEndpoint.handleNotification(RemoteEndpoint.java:231) ~[org.eclipse.lsp4j.jsonrpc-0.23.1.jar!/:na]
at org.eclipse.lsp4j.jsonrpc.RemoteEndpoint.consume(RemoteEndpoint.java:198) ~[org.eclipse.lsp4j.jsonrpc-0.23.1.jar!/:na]
at org.eclipse.lsp4j.jsonrpc.json.StreamMessageProducer.handleMessage(StreamMessageProducer.java:185) ~[org.eclipse.lsp4j.jsonrpc-0.23.1.jar!/:na]
at org.eclipse.lsp4j.jsonrpc.json.StreamMessageProducer.listen(StreamMessageProducer.java:97) ~[org.eclipse.lsp4j.jsonrpc-0.23.1.jar!/:na]
at org.eclipse.lsp4j.jsonrpc.json.ConcurrentMessageProcessor.run(ConcurrentMessageProcessor.java:114) ~[org.eclipse.lsp4j.jsonrpc-0.23.1.jar!/:na]
at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:539) ~[na:na]
at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264) ~[na:na]
at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136) ~[na:na]
at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635) ~[na:na]
at java.base/java.lang.Thread.run(Thread.java:840) ~[na:na]

[Matt-EnabledAnalytics]

fyi, i have zulu jdk 17 and 21 installed, 17 was default in vs code for salesforce-vscode-apex java home. changed to 21 in that extension's settings (not sure if that matters?), but 17 is > 11 per the specs of this extension. update; I didn't think this other extension's setting would change anything and it had no affect.

[github-actions]

This issue has not received a response in 3 days. It will auto-close in 2 days unless a response is posted.

[Matt-EnabledAnalytics]

I believe I have resolved as I have no more errors. Updated the JDK again to 21 and also noticed the code-analyzer wasn't installed. Installed nodejs and installed that and it seems to have resolved all issues.

[Matt-EnabledAnalytics]

Spoke too soon... it eventually errored out. ugh...

[Matt-EnabledAnalytics]

@svc-idee-bot
Seems like the information I add still claims I am missing said information-- trying again

Additional information

Salesforce Extension Version in VS Code:66.1.1

Salesforce CLI Version:@salesforce/cli/2.126.4 win32-x64 node-v22.22.0

OS and version:Windows 11 Home version 24H2 OS build 26100.8037 - Windows Feature Experience Pack 1000.26100.300.0

VS Code version:1.111.0

Most recent version of the extensions where this was working:none