Description:
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From various different connections, downloading https://pecl.php.net/get/ssh2-1.2.tgz is not possible. It results into a 500 internal server error. Initially encountered through pecl install ssh2-alpha.

This only affects version 1.2, the previous version 1.1.2 is still available for download.

Test script:
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curl -i https://pecl.php.net/get/ssh2-1.2.tgz

Expected result:
----------------
HTTP/1.1 200 OK
Date: Fri, 27 Sep 2019 08:13:47 GMT
Server: Apache/2.4.25 (Debian)
Set-Cookie: PHPSESSID=###############; path=/
Expires: Thu, 19 Nov 1981 08:52:00 GMT
Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0
Pragma: no-cache
Content-Disposition: attachment;filename=ssh2-1.2.tgz
Strict-Transport-Security: max-age=31536000
Last-Modified: ##########
ETag: "#############"
Content-Length: ########
Content-Type: application/octet-stream


Actual result:
--------------
HTTP/1.0 500 Internal Server Error
Date: Fri, 27 Sep 2019 08:13:19 GMT
Server: Apache/2.4.25 (Debian)
Set-Cookie: PHPSESSID=############; path=/
Expires: Thu, 19 Nov 1981 08:52:00 GMT
Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0
Pragma: no-cache
Strict-Transport-Security: max-age=31536000
Content-Length: 0
Connection: close
Content-Type: text/html; charset=utf-8