Cannot create a Tag Group with over 199 tags? ("Loading failed" error)

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User dalerka reported an issue where creating a Tag Group with over 199 tags results in a "Loading failed" error. This issue seems to be related to the total character count of the tags, rather than the number of tags itself.

dalerka shared screenshots and error logs, including a browser console error XHR failed loading: GET. neil investigated and concluded that it’s not intentional, and suspected it might be due to the length of the tag names.

After testing, neil found that creating a group with 205 tags works, but dalerka reported the issue persists even after updating to the latest version.

As a temporary workaround, dalerka split the large tag group into two smaller groups. neil pushed a fix to send no more than 100 tags, which should address the issue.

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I repeatedly get this error "Loading failed" when creating a Tag group with over 199 tags (counting for about ~1769 chars in total). After reaching some number of tags or the total chars (for all tags), I can no longer add more tags to this group.

Is it by design or a bug?

I tried few different tag names and saving a group doesn’t fix this either (i.e. allow to add more tags later).

This is a fresh Discourse install but I get similar error on other installations (all single container on a separate VPS with plenty of RAM and disk space).

Discourse-Bug-Tags-Loading-failed
Discourse-Bug-Tags-Loading-failed648×562 33.2 KB

Now, I trimmed the Virgin-Islands to Virgin-Isl and successfully added it, but the next tag cannot have even a single char :crazy_face:

Discourse-Bug-Tags-Loading-failed-2
Discourse-Bug-Tags-Loading-failed-2519×145 7.79 KB

6 Likes
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Interesting, what do you make of this @neil? UI issue?

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This doesn’t sound intentional. I’ll have a look.

I’m guessing you’re on an older version because mine looks like this :frowning:

Tag_Groups_-_Localhost_Discourse
Tag_Groups_-_Localhost_Discourse1738×1070 50.6 KB

EDIT: I can create a group with 205 tags, so it’s probably something to do with the length of the names?

@dalerka I created a group with 300 tags and will stop now. Can you find an error in logs or browser console to go with that “Loading failed” case?

5 Likes
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So your solution is to update to latest.

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@neil Thanks for looking into this.
The difference in styling is due to my custom CSS and I don’t see how that could affect adding the tags.

I was on discourse (86bf6ba) and now upgraded to the newest version (e7b732a) and the problem persists.

NOTE: The problem starts when there are too many characters (in total) as all the tags are being passed in a very long URL resulting in:

XHR failed loading: GET in the browser console.

So, how should this issue be addressed?

2 Likes
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Hmm. I think it’s safe to stop sending all the tags you’ve already input. Only the tag group input allows so many tags.

I pushed a fix to send no more than 100 tags.

4 Likes
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Thank you! Meanwhile (as a workaround) I split one large tag group into two smaller groups.

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