Cookie named "_myapp_key" exceeds maximum size of 4096 bytes

Questions / Help
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1

Hello~
I don’t save too much in session.
Why am I getting this error?

I don’t know where to find a bug in my code.
can anyone give me a hint what make this error happens?

2

Do you have any plugs that are saving data into session? Something that records navigation history is a likely suspect. I think you’ll see the decoded contents of session if you inspect conn.

1 Like
3

I inspected conn and there are few session data.

:plug_session => %{
      "_csrf_token" => "xRRDIFQnA6x37Mor9s8YPQ==",
      "phonebook_id" => 17,
      "recipients_id" => 174,
      "user_id" => 54

Does conn.assigns value affect to this error?

4

No, assigns wouldn’t be included, only session objects.

5

are you storing error messages in your session for later display?

If so, could it be that the message you are saving is a stacktrace or something that is longer than what you imagine?