WPT Private instance - Sorry, that test location already has too many tests pending.

I brought up a private instance in GCP. Able to see home page and other detailsbut when i’m testing a URL i’m getting “Sorry, that test location already has too many tests pending. Please try again later.”. I verified the /install and everything is green except below things under FileSystem. Please help to resolve the issue.

{docroot}/dat writable: NO
{docroot}/results writable: NO
{docroot}/work/jobs writable: NO
{docroot}/logs writable: NO

I used my userid and group while configuring the NGINx and PHP due to issues in root user (Below commands)

cat wptserver-install/configs/nginx/nginx.conf | sed “s/%USER%/$USER/” | sudo tee /etc/nginx/nginx.conf

cat wptserver-install/configs/php/pool.www.conf | sed “s/%USER%/$USER/” | sudo tee /etc/php/$PHPVER/fpm/pool.d/www.conf