Amazon Q is having trouble responding right now

### Checks

- [x] I have searched [github.com/aws/amazon-q-developer-cli/issues](https://github.com/aws/amazon-q-developer-cli/issues?q=) and there are no duplicates of my issue
- [x] I have run `q doctor` in the affected terminal session
- [x] I have run `q restart` and replicated the issue again

### Operating system

macOS 15.5.0 (24F74)

### Expected behaviour

Q should respond successfully.

### Actual behaviour

Amazon Q is having trouble responding right now:
0: unhandled error (InternalServerException)
1: service error
2: unhandled error (InternalServerException)
3: Error { code: "InternalServerException", message: "Encountered an unexpected error when processing the request, please try again.", aws_request_id: "2e46a3c1-2c29-4a72-b124-65dc06799ea3" }

Location:
crates/chat-cli/src/cli/chat/mod.rs:846

BACKTRACE
5 frames hidden
6: chat_cli::cli::chat::ChatSession::next::{{closure}}::h9acb2f432161c580
at :
7: chat_cli::cli::chat::ChatArgs::execute::{{closure}}::he48f77f5b40353ce
at :
8: chat_cli::cli::RootSubcommand::execute::{{closure}}::h11d3da382c2b59a0
at :
9: chat_cli::cli::Cli::execute::{{closure}}::h187e40f36aa1a897
at :
10: tokio::runtime::park::CachedParkThread::block_on::hfd2bc1e689b6c3d0
at :
11: tokio::runtime::context::runtime::enter_runtime::h074f7ee0967b221f
at :
12: chat_cli::main::hc32ddc6efdb40275
at :
13: std::sys::backtrace::__rust_begin_short_backtrace::h569e218c90ac160e
at :
14: std::rt::lang_start::{{closure}}::h29c00de1c45fa69a
at :
15: std::rt::lang_start_internal::hdff9e551ec0db2ea
at :
16: _main
at :

Run with COLORBT_SHOW_HIDDEN=1 environment variable to disable frame filtering.
Run with RUST_BACKTRACE=full to include source snippets.

### Steps to reproduce

just chatting

### Environment

```yaml

[q-details]
version = "1.12.5"
hash = "09124c0c588530efdbde310b5110c8603c42eae3"
date = "2025-07-14T19:33:57.417511Z (2d ago)"
variant = "full"

[system-info]
os = "macOS 15.5.0 (24F74)"
chip = "Apple M1"
total-cores = 8
memory = "16.00 GB"

[environment]
cwd = "/Users/USER/Workspace/prj1"
cli-path = "/Users/USER/Workspace/prj1"
os = "Mac"
shell-path = "/bin/zsh"
shell-version = "5.9"
terminal = "VSCode"
install-method = "unknown"

[env-vars]
PATH = "/Users/USER/.ebcli-virtual-env/executables:/Users/USER/.amplify/bin:/opt/homebrew/opt/mysql-client/bin:/opt/homebrew/bin:/opt/homebrew/sbin:/usr/local/bin:/System/Cryptexes/App/usr/bin:/usr/bin:/bin:/usr/sbin:/sbin:/var/run/com.apple.security.cryptexd/codex.system/bootstrap/usr/local/bin:/var/run/com.apple.security.cryptexd/codex.system/bootstrap/usr/bin:/var/run/com.apple.security.cryptexd/codex.system/bootstrap/usr/appleinternal/bin:/Library/Apple/usr/bin:/Users/USER/.ebcli-virtual-env/executables:/Users/USER/.amplify/bin:/opt/homebrew/opt/mysql-client/bin:/Applications/iTerm.app/Contents/Resources/utilities:/Users/USER/.local/bin:/Users/USER/Library/Android/sdk/emulator:/Users/USER/Library/Android/sdk/tools:/Users/USER/Library/Android/sdk/tools/bin:/Users/USER/Library/Android/sdk/platform-tools:/Users/USER/.local/bin:/Users/USER/.local/bin:/Users/USER/Library/Android/sdk/emulator:/Users/USER/Library/Android/sdk/tools:/Users/USER/Library/Android/sdk/tools/bin:/Users/USER/Library/Android/sdk/platform-tools"
QTERM_SESSION_ID = "8192eb8380a64597a531a67d9cf7438b"
Q_SET_PARENT_CHECK = "1"
Q_TERM = "1.12.1"
SHELL = "/bin/zsh"
TERM = "xterm-256color"
ZDOTDIR = "/Users/USER"
__CFBundleIdentifier = "com.microsoft.VSCode"
```