How to overcome an error in docker when connecting xdebug?

Question

xdebug

I use docker, in docker-compose I forward xdebug settings

environment:
      XDEBUG_CONFIG: "remote_enable=1 remote_host=192.168.220.1 remote_port=9001 idekey=PHPSTORM remote_autostart=1"
      PHP_IDE_CONFIG: "serverName=docker"

error pops up Warning: Header may not contain NUL bytes in /app/public/index.php on line 10
the error appears the first time you use echo or print
so I understand before the headers what information is displayed
if the line XDEBUG_CONFIG: "remote_enable=1 remote_host=192.168. 220.1 remote_port=9001 idekey=PHPSTORM comment out, then the error disappears the
error appeared after updating docker, on the previous version this was not
version docker 18.09.1
​​docker-compose 1.21.0
php 7.3
nginx 1.15

Answer 1

What about xdebug version?
Version >= 2.7.0 had a fix for this bug.
Try putting the value of each variable in single quotes if it's not the xdebug version