Generated vue frontend is broken in 0.27.1

[lxgr-linux]

Describe the bug
The generated vue frontend is broken in 0.27.1.
Produces:

IgntSend.vue:255 Error: TxClient:sendMsgSend: Could not broadcast Tx: Invalid string. Length must be a multiple of 4
    at Object.sendMsgSend (module.ts:101:11)
    at async sendTx (IgntSend.vue:244:22)

when sending requests from the frontend.
This is likely not related to #3638 but rather related to the cosmjs librarie versions used in the generated ts-client just not being suited for cosmos-sdk v0.47.3.

To reproduce

• Scaffold and start a new chain and frontend:

ignite scaffold chain testchain
cd ./testchain
ignite scaffold vue
ignite generate composables
ignite chain build
ignite chain init
cd ./vue
npm i
npm run dev & testchaind start

• Go to localhost:5174 in your web-browser
• Log in with Keplr
• Copy cosmos1... address to clipboard
• Transfer some stake or credits to user:

testchaind tx bank send alice cosmos1... 10stake --from alice

• Go back to frontend and transfer some stake (what ever) back to alice
• Get error in console:

IgntSend.vue:255 Error: TxClient:sendMsgSend: Could not broadcast Tx: Invalid string. Length must be a multiple of 4
    at Object.sendMsgSend (module.ts:101:11)
    at async sendTx (IgntSend.vue:244:22)

What version are you using?

Ignite CLI version:		v0.27.1
Ignite CLI build date:		2023-06-13T13:42:09Z
Ignite CLI source hash:		4acd1f185afb6d8d1a837e54f04c091121cfae01
Ignite CLI config version:	v1
Cosmos SDK version:		v0.47.3
Your OS:			linux
Your arch:			amd64
Your Node.js version:		v20.8.0
Your go version:		go version go1.21.1 linux/amd64
Your uname -a:			Linux archframework 6.5.5-arch1-1 #1 SMP PREEMPT_DYNAMIC Sat, 23 Sep 2023 22:55:13 +0000 x86_64 GNU/Linux
Your cwd:			/home/arch
Is on Gitpod:			false

[nlsui]

I have the same problem, will there be a fix soon?

[julienrbrt]

This seems likely because it is using a too old version.
Which version cosmjs is being used?

[lxgr-linux]

The automatically set versions. 0.27.0 for ts client and 0.29.3 in the generated vue frontend.

[julienrbrt]

Okay, it should be using v0.30 or at best v0.31: cosmos/cosmjs#1353 (comment)
cc @clockworkgr

[lxgr-linux]

When manually pulling up the versions in ts-client, the error still appears at 0.29.3 and the autogenerated code starts to break at 0.30.0.

[MaFeLP]

I just tried to scaffold a project as well and had the same issue.

Thanks for your great project!

[patrickwieth]

This basically stops us from upgrading to cosmos-sdk 0.47