Error in response when loading woo in lispworks

[neuronsong]

I'm getting the following error when attempting to load woo in lispworks enterprise 7.1.2 (64-bit) on osx catalina 10.15.2. I am having no problem loading woo in sbcl or clozure (ccl) on the same machine.

Here are the errors:

CL-USER 3 > (ql:quickload :woo)
To load "woo":
Load 1 ASDF system:
woo
; Loading "woo"
.
.
[package woo.response]
.
.

Error: Variable DATE-HEADER was declared type (SIMPLE-ARRAY CHARACTER (29)) but is being set to value "Thu, 01 Jan 1970 00:00:00 GMT".

Here is the error when executing that code from the response.lisp file.

CL-USER 5 > (declaim (type (simple-array character (29)) date-header))
T

CL-USER 6 > (defvar date-header "Thu, 01 Jan 1970 00:00:00 GMT")

Error: Variable DATE-HEADER was declared type (SIMPLE-ARRAY CHARACTER (29)) but is being set to value "Thu, 01 Jan 1970 00:00:00 GMT".
1 (abort) Return to top loop level 0.

Type :b for backtrace or :c to proceed.
Type :bug-form "" for a bug report template or :? for other options.

Lispworks wants base-char I think... but of course this doesn't work in sbcl although it does work in ccl... at least for setting the variable...

CL-USER 31 > (declaim (type (simple-array base-char (29)) date-header))
T

CL-USER 32 > (defvar date-header "Thu, 01 Jan 1970 00:00:00 GMT")
DATE-HEADER