When installing the module the following message is displayed:
In FileStorage.php line 118:
Invalid data type in config http_response_headers.response_header.public_key_pins, found in file modules/contrib/http_response_headers/config/optional/http_response_headers.response_header.public_key_pins.yml: Unexpected characters near "s" at line 6 (near "description: 'HTTP Public Key Pinning (HPKP
) is a security feature that tells a web client to associate a specific cryptographic public key with a certain web server to prevent Man in the Middle (MITM) attacks with forged certificates.'s").
Failed to run drush en http_response_headers: exit status 1
The problem is config/optional/http_response_headers.response_header.public_key_pins.yml, it has a trailing char (see the 's' at the end):
description: 'HTTP Public Key Pinning (HPKP) is a security feature that tells a web client to associate a specific cryptographic public key with a certain web server to prevent Man in the Middle (MITM) attacks with forged certificates.'s
Install the module
Remove the trailing char.
Fixed
3.0
Code
Automatically closed - issue fixed for 2 weeks with no activity.