Upgrade to 12.01 failed, stuck in step 4

Is the error “Parsing response failed.” ?
I possibly have the same (see below), and those users too:

Myself installed Nextcloud july 12 at shared hosting Binero.se by using the install script. PHP 7.0, MySQL. Strangely it installed NC 11 despite 12 had been out a while. Directly after install and configuration it suggested upgrade to 12 which then performed OK except the theming bug scan.nextcloud.com causing exception in theming? · Issue #4987 · nextcloud/server · GitHub.

A couple days ago i noticed it offered update to 12.0.1, and i let it update. First it complained about my tools.php file from ownCloud Central, so i removed it, and retried. Then after many minutes at step 4 (Create Backup) i got the error: “Parsing response failed.”

I retried it the day after, and got the same.

Here is relevant part of updater.log:

2017-08-09T20:41:22+0200 lxM8RdppZ9 [info] endStep(“3”)
2017-08-09T20:41:22+0200 k7fMHZin2s [info] request to updater
2017-08-09T20:41:22+0200 k7fMHZin2s [info] currentStep()
2017-08-09T20:41:22+0200 k7fMHZin2s [info] Step 3 is in state “end”.
2017-08-09T20:41:22+0200 k7fMHZin2s [info] POST request for step “4”
2017-08-09T20:41:22+0200 k7fMHZin2s [info] startStep(“4”)
2017-08-09T20:41:22+0200 k7fMHZin2s [info] createBackup()
2017-08-09T20:47:42+0200 k7fMHZin2s [info] end of createBackup()
2017-08-09T20:47:42+0200 k7fMHZin2s [info] endStep(“4”)
2017-08-09T20:52:31+0200 YrNmQdzOPF [info] request to updater
2017-08-09T20:52:31+0200 YrNmQdzOPF [info] currentStep()
2017-08-09T20:52:31+0200 YrNmQdzOPF [info] Step 4 is in state “end”.
2017-08-09T20:52:31+0200 YrNmQdzOPF [info] POST request for step “4”
2017-08-09T20:52:31+0200 YrNmQdzOPF [info] startStep(“4”)
2017-08-09T20:52:31+0200 YrNmQdzOPF [info] createBackup()
2017-08-09T20:52:31+0200 YrNmQdzOPF [info] backup folder location exists
2017-08-09T20:58:24+0200 YrNmQdzOPF [info] end of createBackup()
2017-08-09T20:58:24+0200 YrNmQdzOPF [info] endStep(“4”)
2017-08-09T21:23:27+0200 pF6PrtMxfw [info] request to updater
2017-08-09T21:23:27+0200 pF6PrtMxfw [info] currentStep()
2017-08-09T21:23:27+0200 pF6PrtMxfw [info] Step 4 is in state “end”.
2017-08-09T21:23:27+0200 pF6PrtMxfw [info] POST request for step “4”
2017-08-09T21:23:27+0200 pF6PrtMxfw [info] startStep(“4”)
2017-08-09T21:23:27+0200 pF6PrtMxfw [info] createBackup()
2017-08-09T21:23:27+0200 pF6PrtMxfw [info] backup folder location exists
2017-08-09T21:29:43+0200 pF6PrtMxfw [info] end of createBackup()
2017-08-09T21:29:43+0200 pF6PrtMxfw [info] endStep(“4”)

It seem to always retry step 4 and then realise that folder already exists.

  • IMO - it should report that on the user interface!

But i guess that is a secondary error, and the primary problem is is that “Parsing response failed.” Unfortunately that message dont tell us much: What is what trying to do when getting parsing error on what response from what??