ChromeDriver NewSession time out

I am very new to testing with chrome and using the chrome driver. We use AutoIT to automate some actions in chrome for our application.  We seem to run into some timing issue.  our app page sometimes take a bit of time to load, up to 30 seconds maybe a bit more to totally complete. 

On the option in AutoIt to open a new Chrome session we sometimes get an error pop up.

Error: This local variable has not been assigned a value

Specifically: r

941: if !r 

If we click the continue about 5 times (each have a different stack trace) then the script will continue and work. 

The error does not happen every time,  a lot of the times it work perfectly. 

Can anyone shed some light on what this might be, or how I can troubleshoot this better. 

We are using chrome 132.0.6834.160 and  chrome driver 132.0.6834.83

Thanks