Unable to set image alpha channel with setImageAlphaChannel method about imagickdemos HOT 4 OPEN

Unable to set image alpha channel

That's the whole output?

Which line does it occur on?

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Dear Danack,

Errors : Unable to set image alpha channel (On Method $imagick->setImageAlphaChannel(\Imagick::ALPHACHANNEL_DEACTIVATE);)
URL : http://camvgo.com/game/cards/2#

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Does it require any package to run this services?

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@hengsoheak The stack trace you provided is nothing like the code sample you originally posted.

Please post a reproducible example if you want me to investigate. I don't have time to guess what code is actually being run.

However, there's a reasonable chance you've just cocked up your computer by installing ImageMagick 7, but also are using a version of Imagick that was compiled against ImageMagick 6, as the value of \Imagick::ALPHACHANNEL_DEACTIVATE should be 5 on ImageMagick 7, but in your stack trace it seems to have the value of 4, if that is what the code is actually calling.

There is actually code in place to detect that situation and give a warning....but maybe it's not working or you've just disabled/ignored that warning?

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