I am trying to run nginx test using below command (nginx version is 1.16.1)

TEST_NGINX_BINARY=/usr/sbin/nginx TEST_NGINX_UNSAFE=true prove ${PROJECT_SOURCE_DIR}/nginx-tests

but get below error -

nginx: invalid option: "e"
Can't start nginx at lib/Test/Nginx.pm line 350.

Can someone please clarify the reason for the error?