Frontend canister deployment error

I have a frontend canister that is already deployed on the mainnet. When I try to deploy it again after making changes, I get the following error. What could be the issue?

Searching by the error message I found a similar thread where the reason was the canister out of cycles.

Could you please double check the canister has enough cycles?

Additionally could you please post error messages as text, not as a picture? That would help a lot with debugging, discoverability and knowledge sharing.

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Thank you. let me check the cycles balance and confirm.

I added more 3T cycles to the canister but then I am still getting the error when I try to deploy it.Below is output from the console.

Deploying: rentmase_frontend
All canisters have already been created.
Module hash d4096e4dc47a4061bb5ba55449a50548b12d6744c3db19a5960a580c39dbfd15 is already installed.
WARN: This project does not define a security policy for any assets.
WARN: You should define a security policy in .ic-assets.json5. For example:
WARN: [
WARN: {
WARN: “match”: “**/*”,
WARN: “security_policy”: “standard”
WARN: }
WARN: ]
WARN: To disable the policy warning, define “disable_security_policy_warning”: true in .ic-assets.json5.
Error: Failed while trying to deploy canisters.
Caused by: Failed while trying to install all canisters.
Caused by: Failed to install wasm module to canister ‘rentmase_frontend’.
Caused by: Failed to store assets in canister ‘rentmase_frontend’.
Caused by: Failed asset sync with canister 55e7x-xyaaa-aaaal-qmzsq-cai.
Caused by: Failed to create project asset: Failed to create encoding: Failed to create chunk: Failed to create chunks: The replica returned an HTTP Error: Http Error: status 400 Bad Request, content type “text/plain; charset=utf-8”, content: error: malformed_request
details: HTTP body reading timed out
Caused by: Failed to create encoding: Failed to create chunk: Failed to create chunks: The replica returned an HTTP Error: Http Error: status 400 Bad Request, content type “text/plain; charset=utf-8”, content: error: malformed_request
details: HTTP body reading timed out
Caused by: Failed to create chunk: Failed to create chunks: The replica returned an HTTP Error: Http Error: status 400 Bad Request, content type “text/plain; charset=utf-8”, content: error: malformed_request
details: HTTP body reading timed out

I don’t have a definitive answer here, seems like further debugging is needed. Here are some suggestions:

  • isolate the issue – confirm that timeouts occur only during canister redeployment and not with otehr operations
  • increase visibility – use canister logging to identify which steps of deployment complete successfully before TO occurs. if needed deploy locally a dummy canister with identical logging to set a baseline. you don’t need to upgrade, logging was working by default and should have caught traps unless the messages were too big (>4KiB) so it wiped out old entries.
  • check for traps – ensure that there are no traps in init, pre_upgrade and post_upgrade
  • evaluate state handling – if your canister handles large amounts of state in pre/post upgrade, estimate the cost of de-/serialization, read/write operations, as these could be contributing to TO

taking these steps should help localising the problem. debugging is a critical part of software engineering and gathering such metrics can provide valuable insights into the issue.

I’m not sure how dfx deploy works anymore since I don’t use this tool, but based on those two error messages, is it possible that either:

  • your canister build is failing, resulting in no (or an empty?) WASM,

  • or dfx is looking for the WASM in a different location than where it’s actually built?

In other words, could the network error actually be caused by some incorrect local data?

This might be totally inaccurate, but I thought I’d share in case it helps narrow down the issue.

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