# DAR Uploaded, but No Templates in Daml Navigator (Minikube + Canton Setup)

**URL:** <https://forum.canton.network/t/dar-uploaded-but-no-templates-in-daml-navigator-minikube-canton-setup/7828>\
**Category:** App Development\
**Tags:** canton\
**Created:** [March 16, 2025, 10:39am UTC](https://forum.canton.network/t/dar-uploaded-but-no-templates-in-daml-navigator-minikube-canton-setup/7828 "2025-03-16T10:39:40Z")\
**Posts on this page:** 1\
**Showing post:** 18

<div class="post-metadata">

**Author:** ![pratikkedia](https://avatars.discourse-cdn.com/v4/letter/p/b19c9b/32.png) [@pratikkedia](https://forum.canton.network/u/pratikkedia)\
**Post date:** [March 24, 2025, 12:51pm UTC](https://forum.canton.network/t/dar-uploaded-but-no-templates-in-daml-navigator-minikube-canton-setup/7828/18 "2025-03-24T12:51:26Z")

</div>

We have recently encountered an issue while uploading DAR files to my Canton participant, and I wanted to share my experience .

### **Issue:**

While uploading multiple DAR files to my Canton participant, one of the uploads failed with the following error:

```haskell
An exception was thrown during the upload-dar command
- GRPCIOTimeout

```

This occurred while uploading `sor-mvp-init-1.2.22.dar` , which is 5.1MB in size. The error message suggests that the DAR file size might exceed the gRPC maximum message size, which is typically set to 4MB by default.

### **My Setup:**

- **Participant Configuration:**

```haskell
ledger-api {
    address = "0.0.0.0"
    port = 4001
    postgres-data-source.synchronous-commit = off
    max-inbound-message-size = 209715200
    command-service.max-commands-in-flight = 100
    max-contract-state-cache-size = 100
    max-contract-key-state-cache-size = 100
    max-transactions-in-memory-fan-out-buffer-size = 100
}

```

- **DAR File Sizes:**
  - `sor-mvp-data-dependencies-1.2.6.dar` ( Uploaded successfully)
  - `sor-mvp-models-1.2.22.dar` (Uploaded successfully)
  - `sor-mvp-integration-acord-1.2.0.dar` ( Uploaded successfully)
  - `sor-mvp-init-1.2.22.dar` ( Failed due to GRPCIOTimeout)

### **Possible Causes:**

#### **1. Increase gRPC Maximum Message Size**

Since my participant configuration already sets `max-inbound-message-size = 209715200` (200MB), the issue might not be the default 4MB limit

I have set the max-inbound-message-size = 209715200 as we have discussed  
and we are using port forward cmd while we upload the dar

daml ledger upload-dar --host=127.0.0.1 --port=4001 /Users/zinnia\_india/Documents/qa\_deployment/deleting\_daml\_backup/SOR-DAML/.packages/init/.daml/dist/sor-mvp-init-1.2.22.dar

Port forward cmd

kubectl port-forward svc/partcipant-service-name 4001:4001 -n canton

and this cmd says connection lost and ledger participant pod get restarted when we upload dar

---

_[View the full topic](https://forum.canton.network/t/dar-uploaded-but-no-templates-in-daml-navigator-minikube-canton-setup/7828)._