Bad Request Piwik - bad-request

I get this error when I try to call a PIWIK API.
Bad Request
Your browser sent a request that this server could not understand.
Size of a request header field exceeds server limit.
Cookie: piwik_visitor2=1%3DMjQ2NzVkZWQzNWE2NmVmZTg0MDAzYjcxNDVjMWNkYjM%3D%3A2%3....
How can I get ride of this. Piwik is hosted on one of our server. Is there anything to do with Apache config?
By the way, it has been working for quite a while. But it has suddenly stopped working.
Please advise.
Thanks,
Imran

This is a known bug in Piwik, that will be fixed at some point in the future: http://dev.piwik.org/trac/ticket/409
However as per info in the ticket, the team will release a fix to stop causing the error for 1.0, in next weeks probably.

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I am using next.js and I need to send an AJAX request (I am using isomorphic-unfetch). Some cases the response is with 302 HTTP status code and I need to redirect to the URL that comes in response. For redirecting, I have tried with Router.push(url) and window.location.href=url due is a client redirection.
The problem is that in IE11 appears the error (other browsers works well)
The redirection is done but it takes about 10 seconds. I was googling and found this SCRIPT7002: XMLHttpRequest: Network Error 0x2ef3, Could not complete the operation due to error 00002ef3 that describe a bit my problem but none of the proposed solutions fixed my problem.
Other posts suggest changing the status response but I have no control to the requested endpoint so I can't change anything.
Any ideas on how to solve this?

400 Response code on post to hubspot form

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PHP Fatal error: Uncaught GuzzleHttp\Exception\ClientException: Client error: POST https://forms.hubspot.com/uploads/form/v2/XXXXXX/97d44f1e-XXXX-XXXX-XXXX-e4c453843854 resulted in a 404 Not Found response:
I've nullified the URL.
I've searched this error and read through many, many GitHub threads but no seem of any use to me - they're all about other people's bespoke implementations. Can anybody here shed any light on this for me? Is there any more information I can post to allow anybody to help me investigate deeper?
Some temp fixes I've seen circulate:
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Since doing the above (there was a mixture of the two in our case, we have not caught any further errors for the past couple days) Jury is still out on what is the true issue behind this.
Details:
I hit this issue as well. Guzzle is throwing the error after seeing the HS response. This Guzzle client was not used in the older version of the plugin, so thinking that either the request was different in previous versions (prior to v3) or HubSpot was throwing a 404 response before and it was being ignored. Data (in my testing) is still posting correctly to the HubSpot API and shown/updated in the Contact record database. But website users end up seeing a 500 error due to this issue. (As a result the analytics scripts on the thank you page never get fired so we caught this seeing a drop in GA) I'm assuming the plugin could be coded around this to ignore the exception, but still no idea why it is being provided as a response in the first place.

Getting trouble with a tag in Overpass Turbo since few days

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Here's an example of my requests: http://overpass-turbo.eu/s/fEL
When I execute the request, I'm getting an ajax error: 'Request rejected. (e.g. server not found, request blocked by browser addon, request redirected, internal server errors, etc.)'.
This kind of request used to work very well before. The same request on nodes or relations work, it's only happening with ways tagged 'natural' (and maybe other tags). The error is the same using the webapp Overpass-Turbo.eu or requesting other servers such as http://overpass-api.de/api/interpreter, http://overpass.osm.rambler.ru/cgi/interpreter or http://api.openstreetmap.fr/oapi/interpreter.
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This was caused by a recent regression, which has already been fixed. Please see this post for details. Your query should be running fine by now.

500 Internal Server Error for my facebook app link

I see that this question has been asked before but no solution has been provided.
I am getting nothing but 500 Internal Server Error since yesterday when I use following link:
http://apps.facebook.com/myappID
Yes, I already tried clearing up my cache & cookies so don't even bother asking me this. I have added my app link in the Canvas URL which should show up after I click on the app URL but nothing but that 500 HTTP error. I tried on all browsers and even asked few of my friends too and they said same error.
I thought it was an error on Facebook but I don't see how it's not being fixed for a day now.
Any help? Thank you.
The 500 Internal Server Error is a very general HTTP status code that means something has gone wrong on the web site's server but the server could not be more specific on what the exact problem is.
So its a "server-side" error, meaning the problem is not with your PC or Internet connection but instead is a problem with the web site's server.
Maybe you should contact facebook help center.
I just ran into a similar situation and found that when I reduced the limit in my GET call to 20 rather than 500 the server responded well.
https://graph.facebook.com/v2.0/6558867050/posts?limit=20

Facebook error: Encountered an error while processing the request: 502 Error parsing server response. Got EOF while waiting for outstanding responses

Today I started receiving errors from Facebook when my app tries to post a message.
The app successfully authorised, Facebook message window pops up, everything looks fine (links, pics, description) , but when I press post. it times out with this message
Encountered an error while processing the request: 502 Error parsing server response. Got EOF while waiting for outstanding responses Please try resending your request. This is probably not a bug in proxygen. Based on experience, either intern or latest is temporarily down due to a SEV or push. Please check in e FYI or #e first. If the error persists through retries, or if you have good reason to suspect this is a bug in proxygen, please report the issue to ti-bugs#lists or #ti with the following debug information: 2012-05-20 22:24:40 slb010.02.snc5 1585267068836963531
UPDATE: It is a Facebook issue. There is an opened and assigned bug report here You can subscribe there to follow the process.
It looks like Facebook fixed the issue. My apps work fine.
If you still experience the same problem, you can check out the progress here: http://developers.facebook.com/bugs/411849912170144?browse=search_4fb9fb43db2468a28526107
If this issue comes up again check whether there is an already submitted bug here: http://developers.facebook.com/bugs/ if there isn't submit one