I run the app using this code
library(chattr)
Sys.setenv("OPENAI_API_KEY" = "sk-........fV3D")
chattr_use("gpt4")
chattr_app()
and whenever I submit a prompt from the Viewer window on the right side i get this error

Listening on http://127.0.0.1:4438 Error: ! in callr subprocess. Caused by error in _**`abort(req_result)`: ! `message` must be a character vector, not a object.**_ --- Subprocess backtrace: 1. chattr::ch_submit(defaults = defaults, prompt = prompt, stream = stream, … 2. chattr:::ch_submit.ch_openai(defaults = defaults, prompt = prompt, stream = stream, … 3. chattr:::ch_openai_complete(prompt = prompt, defaults = defaults) 4. rlang::abort(req_result) 5. rlang:::validate_signal_args(message, class, call, .subclass, "abort") 6. rlang:::check_character(message, call = env) 7. rlang:::stop_input_type(x, "a character vector", ..., allow_na = FALSE, … 8. rlang::abort(message, ..., call = call, arg = arg) 9. \| rlang:::signal_abort(cnd, .file) 10. \| base::signalCondition(cnd) 11. global (function (e) … Warning: Error in observe: Streaming returned error 51: 50: signalCondition 49: signal_abort 48: abort 47: observe 46: 3: shiny::runApp 2: runGadget 1: chattr_app
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