Why are my Let's Encrypt certificates failing to provision on my development environments?

Let’s Encrypt can only handle a maximum of 64 characters, and the full URL of your project consists of PLATFORM_ENVIRONMENT-PLATFORM_PROJECT.REGION.platformsh.site where:

• PLATFORM_ENVIRONMENT = PLATFORM_BRANCH + 7
• PLATFORM_PROJECT = 13
• REGION = 2-4
• platformsh.site = 15
• extra characters (. & -) = 4

Keep your branch names to under 20 characters to avoid this issue.