An image could not be created from the given input

Permalink
I’m a beginner in using Concrete5 and I'm building site using Concrete version 8.1.0. Suddenly I got a message “An unexpected error occurred.
An image could not be created from the given input.”

Now I cannot open anything from my site. Not even the dashboard.

In StackOverflow I found similar problem with advice to open database and do a query:

UPDATE FileImageThumbnailPaths SET isBuilt = 1 WHERE isBuilt = 0;

but I could not get any results. Maybe I made the query in a wrong way? I have no experience in SQL.

I was hoping to update to newer version of Concrete but the server I use, has Installatron which says that version 8.1.0 is the last version of Concrete5. So I cannot update.
Help needed.

 
CMSDeveloper replied on at Permalink Reply
CMSDeveloper
Hello,

About Installatron, ask your host to enable latest concrete5 version in there admin-installatron configuration.

Do you have some more info, about your hosting environment?
kalevina replied on at Permalink Reply
Hello

My service provider says they cannot put new updates to Installatron. The developer of Installatron will only provide updates.

Is this thing what happened, a known thing in version 8.1.0?
Is there any other workaround to get the site back?

My hosting environment is:

Database server
Server: Localhost via UNIX socket
Server type: MySQL
Server version: 5.7.21-log - MySQL Community Server (GPL)
Protocol version: 10

Web server
Apache/2
Database client version: libmysql - mysqlnd 5.0.11-dev - 20120503 - $Id: 76b08b24596e12d4553bd41fc93cccd5bac2fe7a $
PHP extension: mysqliDocumentation curlDocumentation mbstringDocumentation
PHP version: 5.6.34

phpMyAdmin
Version information: 4.7.9 (up to date)
Gondwana replied on at Permalink Reply
Gondwana
I'm afraid that early versions of c5 8 have nasty problems with thumbnailing (eg, making false assumptions about file types, making optimistic assumptions about memory and CPU limits). The errors you're seeing could be artefacts of those. Perhaps changing thumbnailing and other image options (graphics library?) will help.