There isn't any JSON ...
Re: Unexpected end of JSON input after migrating/upgrading
Number of replies: 14Re: Unexpected end of JSON input after migrating/upgrading
Can you tell us when the "Unexpected end of JSON input" appears, for example, when an assignment is being uploaded? Or when a file resource is being uploaded? Or when a course image is being uploaded?
Maybe it happens for all of these but it would help if you could give examples of specific uploads that get this error.
Re: Unexpected end of JSON input after migrating/upgrading
Hello Leon,
The error appears when I'm uploading a recovery file to restore a course. what I don't understand is that the first 3 courses that I restored no error appeared but in the 4th this happened.
the files are in a repository folder.
The error appears when I'm uploading a recovery file to restore a course. what I don't understand is that the first 3 courses that I restored no error appeared but in the 4th this happened.
the files are in a repository folder.
I'm uploading some more captures that I took at the last try hopping this would help to clarify the problem
Re: Unexpected end of JSON input after migrating/upgrading
more captures
Re: Unexpected end of JSON input after migrating/upgrading
the last ones
Re: Unexpected end of JSON input after migrating/upgrading
Have you tried this from another computer? Looking at the captures there are requests to Kaspersky Labs that respond with 503 Service Unavailable. So I'm wondering if there's some Kaspersky Labs software on your computer that could be blocking this in your browser?
Re: Unexpected end of JSON input after migrating/upgrading
I tried from other computer and its the same error but without the karspersky problem.
<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN">
<html><head>
<title>504 Gateway Timeout</title>
</head><body>
<h1>Gateway Timeout</h1>
<p>The gateway did not receive a timely response
from the upstream server or application.</p>
<p>Additionally, a 504 Gateway Timeout
error was encountered while trying to use an ErrorDocument to handle the request.</p>
</body></html>
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Re: Unexpected end of JSON input after migrating/upgrading
What web server are you using? Apache or nginx? Or are you using shared hosting?
You probably need to increase the maximum file upload size in your web server software and/or PHP. See below link, which focuses mainly on Apache and PHP.
You probably need to increase the maximum file upload size in your web server software and/or PHP. See below link, which focuses mainly on Apache and PHP.
Re: Unexpected end of JSON input after migrating/upgrading
I can see two things in your latest screenshot 1) the backup file appears to be 715.7 MB and 2) the XHR request is getting a 504 Gateway Timeout after 5 minutes. So maybe the the problem is that because the course backup is large a timeout is being exceeded.
Check PHP's max_execution_time, shown in PHP info. This may be 300 (i.e. 5 minutes). You could try doubling it.
In PHP info also check Server API, is it "FPM/FastCGI"? If so, then the next thing to check is Apache's TimeOut setting and try doubling that. This will be set in a .conf file somewhere, you may need to use grep if there are many files to search.
When changing any settings you probably need to reload or restart the corresponding service (e.g. systemctl restart httpd or systemctl restart php-fpm).
If your server is managed for you then you may need to contact the hosting provider for assistance with this.
If I'm correct about the size of the course backup you may want to try using Moosh to perform the restore at the command line as this avoids some issues with timeouts.
Re: Unexpected end of JSON input after migrating/upgrading
I already changed the max_execution_time and the same error happens.
these are the actual settings for php.ini:
display_errors = On
max_execution_time = 10000
max_input_time = 10000
max_input_vars = 10000
memory_limit = 900M
post_max_size = 900M
session.gc_maxlifetime = 10000
session.save_path = "/var/cpanel/php/sessions/ea-php70"
upload_max_filesize = 900M
zlib.output_compression = On
I can't find server api ... or where to change apache's timeout settings
these are the actual settings for php.ini:
display_errors = On
max_execution_time = 10000
max_input_time = 10000
max_input_vars = 10000
memory_limit = 900M
post_max_size = 900M
session.gc_maxlifetime = 10000
session.save_path = "/var/cpanel/php/sessions/ea-php70"
upload_max_filesize = 900M
zlib.output_compression = On
I can't find server api ... or where to change apache's timeout settings
Re: Unexpected end of JSON input after migrating/upgrading
Server API is shown in Site administration ▸ Server ▸ PHP info?:
If your site is hosted on a managed service that you use a web interface to manage (e.g. cPanel) then you may need to contact the hosting company to find out how to change Apache's TimeOut (they may not allow this).
To explain, if Apache is using Server API: FPM/FastCGI then when Apache runs some PHP it passes it to the FPM process. FPM runs the PHP then sends the results to Apache. But if the PHP takes a long time (for example when restoring a large course backup) then Apache may give up waiting and show the 503 Service Unavailable error instead. TimeOut controls how long Apache waits for FPM to run the PHP.
If Server API is not FPM/FastCGI (e.g. if it's Apache 2.0 Handler) then the problem may be something else and changing the Apache TimeOut may not help.
Re: Unexpected end of JSON input after migrating/upgrading
Thank you so much for your help!
I contacted my hosting service and I'm currently waiting for an answer.
What I could recollect from the debugging message is this:
Syntax Error
Unexpected token < in JSON at position 0
at JSON.parse ()
at Object.Y.namespace.parse https://stm-learning.com.ar/theme/yui_combo.php?rollup/3.17.2/yui-moodlesimple.js:24483:18)
at FilePickerHelper.complete (https://stm-learning.com.ar/lib/javascript.php/1612908620/repository/filepicker.js:54:84)
at Y.Subscriber._notify (https://stm-learning.com.ar/theme/yui_combo.php?rollup/3.17.2/yui-moodlesimple.js:13680:35)
at Y.Subscriber.notify (https://stm-learning.com.ar/theme/yui_combo.php?rollup/3.17.2/yui-moodlesimple.js:13709:24)
at Y.CustomEvent._notify (https://stm-learning.com.ar/theme/yui_combo.php?rollup/3.17.2/yui-moodlesimple.js:13372:17)
at Y.CustomEvent._proSubs (https://stm-learning.com.ar/theme/yui_combo.php?rollup/3.17.2/yui-moodlesimple.js:13498:36)
at Y.CustomEvent.fireSimple (https://stm-learning.com.ar/theme/yui_combo.php?rollup/3.17.2/yui-moodlesimple.js:13465:18)
at Y.CustomEvent._fire (https://stm-learning.com.ar/theme/yui_combo.php?rollup/3.17.2/yui-moodlesimple.js:13447:29)
at IO.fire (https://stm-learning.com.ar/theme/yui_combo.php?rollup/3.17.2/yui-moodlesimple.js:14600:22)
I'm not sure if this is going to help, but I'm desperate to fix this problem!!
I contacted my hosting service and I'm currently waiting for an answer.
What I could recollect from the debugging message is this:
Syntax Error
Unexpected token < in JSON at position 0
at JSON.parse ()
at Object.Y.namespace.parse https://stm-learning.com.ar/theme/yui_combo.php?rollup/3.17.2/yui-moodlesimple.js:24483:18)
at FilePickerHelper.complete (https://stm-learning.com.ar/lib/javascript.php/1612908620/repository/filepicker.js:54:84)
at Y.Subscriber._notify (https://stm-learning.com.ar/theme/yui_combo.php?rollup/3.17.2/yui-moodlesimple.js:13680:35)
at Y.Subscriber.notify (https://stm-learning.com.ar/theme/yui_combo.php?rollup/3.17.2/yui-moodlesimple.js:13709:24)
at Y.CustomEvent._notify (https://stm-learning.com.ar/theme/yui_combo.php?rollup/3.17.2/yui-moodlesimple.js:13372:17)
at Y.CustomEvent._proSubs (https://stm-learning.com.ar/theme/yui_combo.php?rollup/3.17.2/yui-moodlesimple.js:13498:36)
at Y.CustomEvent.fireSimple (https://stm-learning.com.ar/theme/yui_combo.php?rollup/3.17.2/yui-moodlesimple.js:13465:18)
at Y.CustomEvent._fire (https://stm-learning.com.ar/theme/yui_combo.php?rollup/3.17.2/yui-moodlesimple.js:13447:29)
at IO.fire (https://stm-learning.com.ar/theme/yui_combo.php?rollup/3.17.2/yui-moodlesimple.js:14600:22)
I'm not sure if this is going to help, but I'm desperate to fix this problem!!
Re: Unexpected end of JSON input after migrating/upgrading
I asked about PHP's Server API value, once and again, but you won't tell us.
As far as I'm aware the problem is: during an attempted restore of a large course backup (715.7 MB) the web server (not Moodle) is returning an error: 504 Gateway Timeout. We don't know why but it may be because the size of the course backup means that something is taking longer than is allowed (some timeout setting is exceeded).
It may be that your Moodle site needs a server with a better specification.
If you're desperate to fix this maybe you need to consider some commercial support options.
Re: Unexpected end of JSON input after migrating/upgrading
I understand, Thank you for you support and time!!
Re: Unexpected end of JSON input after migrating/upgrading
Try to update to latest Moodle 3.10, last week similar problem was fixed..