After updating to 5.1, teleporter backup gives me '500 Internal Server Error'

[idunno101]

In raising this issue, I confirm the following:

• I have read and understood the contributors guide.
• The issue I am reporting can be replicated.
• The issue I am reporting isn't a duplicate (see FAQs, closed issues, and open issues).

How familiar are you with the the source code relevant to this issue?:

3

---

Expected behavior:

Expected to have the teleporter archive downloaded

Actual behavior:

Web console gives me "500 Internal Server Error"

Steps to reproduce:

-Login to the pi-hole web interface
-Go to Settings -> Teleporter
-Click Backup
-A new tab opens for "admin/scripts/pi-hole/php/teleporter.php" but nothing else happens
-The web console in the browser shows me the error code 500 and an error is written to the pihole's error.log
(see error.log at the end of the issue)
I also get the same output in error.log when trying to run pihole -a -t on the system

Debug token provided by uploading pihole -d log:

u1oxkxonx8

Troubleshooting undertaken, and/or other relevant information:

To troubleshoot I
-Attempted to use different browsers (Firefox and Safari)
-Restarted the pi

I used the backup feature in 5.0 with no problems and only started getting these errors after updating to 5.1

Going into /var/log/lighttpd/error.log shows me there's something wrong creating the archive

(mod_fastcgi.c.421) FastCGI-stderr: PHP Fatal error: Uncaught BadMethodCallException: data phar "/tmp/pi-hole-localhost.localdomain-teleporter_2020-07-16_22-57-32.tar.gz" has invalid extension tar.gz in /var/www/html/admin/scripts/pi-hole/php/teleporter.php:574

(mod_fastcgi.c.421) FastCGI-stderr: Stack trace:

(mod_fastcgi.c.421) FastCGI-stderr: #0 /var/www/html/admin/scripts/pi-hole/php/teleporter.php(574): PharData->compress()

(mod_fastcgi.c.421) FastCGI-stderr: #1 {main}

(mod_fastcgi.c.421) FastCGI-stderr: thrown in /var/www/html/admin/scripts/pi-hole/php/teleporter.php on line 574

[DL6ER]

Support for gzipped containers has been added 2017 and never changed since then: #595
It first glance, it doesn't seem any change was made to teleporter that could have caused this. Maybe your local PHP updated/upgraded and this brought up such this error?

Also, it says

"/tmp/pi-hole-localhost.localdomain-teleporter_2020-07-16_22-57-32.tar.gz"

for you, however, it is unclear to me where the trailing .gz comes from. The cde reads:

	$hostname = gethostname() ? gethostname()."-" : "";
	$tarname = "pi-hole-".$hostname."teleporter_".date("Y-m-d_H-i-s").".tar";
	$filename = $tarname.".gz";
	$archive_file_name = sys_get_temp_dir() ."/". $tarname;
	$archive = new PharData($archive_file_name);

(ignore $filename, it's not used here). To me, this looks like there should be no .gz here, right? Or am I missing something?

[DL6ER]

Ah, I see this is a duplicate of #1497

[pralor-bot]

This issue has been mentioned on Pi-hole Userspace. There might be relevant details there:

https://discourse.pi-hole.net/t/teleporter-backup-error-500/35883/18