Cannot add /script folder for Linux folder exception in exception policy.
Error message: Request contents are invalid. Script or HTML parameters are not allowed.
This is by-design. /script folder cannot set as folder exception.
For a workaround, Linux agent after 14.3 RU5 release can use wildcards in exceptions. Please set a directory like "/scrip*" or "scrip?".
Wildcard support for files and folders in exceptions
ESCRT-6145