Error loading Rust wasm module 'wasmchat': RuntimeError: unreachable

[aman2909verma]

Encountered a panic!
__cargo_web_snippet_dc2fd915bd92f9e9c6a3bd15174f1414eee3dbaf @ wasmchat.js:688

Error loading Rust wasm module 'wasmchat': RuntimeError: unreachable
        at __rust_start_panic (wasmchat.wasm:0xa15e1)
        at rust_panic (wasmchat.wasm:0xa1412)
        at _ZN3std9panicking20rust_panic_with_hook17h9d91fa0fae16500fE (wasmchat.wasm:0xa10d7)
        at _ZN3std9panicking19begin_panic_handler28_$u7b$$u7b$closure$u7d$$u7d$17h2d82b5b2db976f3fE (wasmchat.wasm:0xa0a2f)
        at _ZN3std10sys_common9backtrace26__rust_end_short_backtrace17h24539600b7e2452cE (wasmchat.wasm:0xa09ae)
        at rust_begin_unwind (wasmchat.wasm:0xa0fd4)
        at _ZN4core9panicking9panic_fmt17h91d2023e5afe1929E (wasmchat.wasm:0xa29e6)
        at _ZN4core9panicking5panic17h5da66f104e83c46aE (wasmchat.wasm:0xa1f69)
        at _ZN151_$LT$stdweb..webcore..serialization..SerializedValue$u20$as$u20$core..convert..From$LT$stdweb..webcore..serialization..SerializedUntaggedString$GT$$GT$4from17hf841a71df99f6574E (wasmchat.wasm:0x8bf3f)
        at _ZN50_$LT$T$u20$as$u20$core..convert..Into$LT$U$GT$$GT$4into17h1fd8795c5b2aba63E (wasmchat.wasm:0x8beba)
    wasmchat.wasm:0xa15e1

Uncaught (in promise) RuntimeError: unreachable
at __rust_start_panic (wasmchat.wasm:0xa15e1)
at rust_panic (wasmchat.wasm:0xa1412)
at _ZN3std9panicking20rust_panic_with_hook17h9d91fa0fae16500fE (wasmchat.wasm:0xa10d7)
at _ZN3std9panicking19begin_panic_handler28_$u7b$$u7b$closure$u7d$$u7d$17h2d82b5b2db976f3fE (wasmchat.wasm:0xa0a2f)
at _ZN3std10sys_common9backtrace26__rust_end_short_backtrace17h24539600b7e2452cE (wasmchat.wasm:0xa09ae)
at rust_begin_unwind (wasmchat.wasm:0xa0fd4)
at _ZN4core9panicking9panic_fmt17h91d2023e5afe1929E (wasmchat.wasm:0xa29e6)
at _ZN4core9panicking5panic17h5da66f104e83c46aE (wasmchat.wasm:0xa1f69)
at _ZN151_$LT$stdweb..webcore..serialization..SerializedValue$u20$as$u20$core..convert..From$LT$stdweb..webcore..serialization..SerializedUntaggedString$GT$$GT$4from17hf841a71df99f6574E (wasmchat.wasm:0x8bf3f)
at _ZN50_$LT$T$u20$as$u20$core..convert..Into$LT$U$GT$$GT$4into17h1fd8795c5b2aba63E (wasmchat.wasm:0x8beba)

I am building a yewchat app from a wasm book by kevin hoffman but I see the above errors in the web console when I run my server using this command
cargo-web start --target=wasm32-unknown-unknown

The github link of my project is https://github.com/aman09v/YewChat

Please help me with this issue

[siku2]

There's very little I can do to help you with this because of the following reasons:

• It looks like you're using a really old version of Yew.
• You're using stdweb, which will soon no longer be supported.
• In a similar vein, cargo-web is stdweb exclusive and as such will no longer be supported either

Consider updating to a more recent version of Yew and switching over to Trunk for the build tool.