I took over a Laravel 5.5 project, and there is something going on that I have never encountered - the content on the error reporting screen is all replaced by stars.
I don't know what the previous devs did to accomplish this, but obviously I want to be able to see this info. The .env content seems fairly obvious:
APP_ENV=local APP_HOST=http://localhost APP_DEBUG=true APP_TESTMODE=false APP_CACHE_ENABLED=true Other than that, there are API keys for Stripe, AWS etc, but nothing that would presume to block me from viewing the info on the error screen.
Why is this problem occurring and how can I fix it?

APP_TESTMODEseems unusual, I would check where that leads. You may want to check as well your composer.json for any unusual packageAPP_TESTMODE, had no effect. Also found its usage in the code, it's definitely unrelated.