Invalid error description for 4xx status code without body

[gerardva]

Description of the Bug

When doing a request which results in a 4xx status code without a body, an error with the following description is returned:

Sorry, something went wrong when trying to process the request. If this problem persists, contact us at support@chargebee.com. type: internal_error, http_status_code: 500, error_code: internal_error, content:

This incorrectly states that the status code was 500. This seems to be caused by this code:

chargebee-go/http_request.go

Line 169 in 264e918

return fmt.Errorf("Sorry, something went wrong when trying to process the request. If this problem persists, contact us at support@chargebee.com. \n type: internal_error, \n http_status_code: 500, \n error_code: internal_error,\n content: %q", bodyStr)

, where an error occurs when trying to Unmarshal the empty body content to an Error struct which makes it fall back to this default error.

I experienced this for the EntitlementsForCustomer request.

Steps to reproduce

1. Make a EntitlementsForCustomer request with an invalid customer ID (for example a url as that contains characters that are not allowed): res, err := customerentitlement.EntitlementsForCustomer(invalidCustomerID, params).ListRequest()
2. Check the error in the err variable

Expected Behavior

I would expect an error which correctly states the status code

Code Snippets (if applicable)

Operating System

macOS

Language version

1.25.0

Library version

v3.38.1

Additional context

No response