Slack Mobile Notification Preview shows "Content cannot be displayed" #199
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It may be this was done as plain_text because some errors contain what looks like markdown formatting
adamboutcher
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I think a recent Slack app update may have rendered this pull request moot, as they seem to be able to display the message content with some formatting and emojis. |
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According to this StackOverflow question:
https://stackoverflow.com/questions/56317962/message-notifications-produce-this-content-cant-be-displayed
The solution is to add a text property to the root JSON object sent in the POST.
I haven't set up the build environment to test this, I've only tested POSTing the JSON manually which works.