When I try to install publisher this error show the terminal:

In ArrayNode.php line 275:

Invalid type for path "fos_http_cache.proxy_client.varnish.http.servers". E
xpected array, but got string
Hint: Addresses of the hosts the caching proxy is running on. May be hostna
me or ip, and with :port if not the default port 80.


Script Sensio\Bundle\DistributionBundle\Composer\ScriptHandler::clearCache handling the post-install-cmd event terminated with an exception


[RuntimeException]
An error occurred when executing the "'cache:clear --no-warmup'" command:




In ArrayNode.php line 275:

Invalid type for path "fos_http_cache.proxy_client.varnish.http.servers". E
xpected array, but got string
Hint: Addresses of the hosts the caching proxy is running on. May be hostna
me or ip, and with :port if not the default port 80.