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E11000 duplicate key error index in mongodb mongoose
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The error message is saying that there's already a record with null as the email. In other words, you already have a user without an email address.
The relevant documentation for this:
If a document does not have a value for the...
HTML: Include, or exclude, optional closing tags?
...spec clearly specifies when it's valid to omit tags, so it's not always an error.
For example you never need </body></html>. Nobody ever remembers to put <tbody> explicitly (to the point that XHTML made exceptions for it).
You don't need </head><body> unless you have ...
How to get JSON from URL in JavaScript?
...ng Node.js? Then take a look over here. But next time try googling for the error first, the link I posted is the first result that comes up when I type the error into Google.
– Robin Hartmann
Jun 11 '18 at 12:41
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Haskell error parse error on input `='
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Starting in GHC 8.0.1 this would no longer generate an error.
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Undefined symbols for architecture i386: _OBJC_CLASS_$_SKPSMTPMessage", referenced from: error
...background i.e. SKPSMTPMessage Framework. Can somebody suggest why below error is shown
35 Answers
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How to print an exception in Python?
How can I print the error/exception in my except: block?
8 Answers
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configure: error: C compiler cannot create executables
...PXS spits it out, but it has the wrong path so that's why you keep getting errors.
– Adrian Rodriguez
Nov 28 '12 at 0:10
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jQuery: Return data after ajax call success [duplicate]
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success and error are being deprecated in jQuery 1.8. You should start using .done() and .fail(). See the documentation.
– FibreChips
Jul 7 '17 at 20:45
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DefaultInlineConstraintResolver Error in WebAPI 2
I'm using Web API 2 and I'm getting the following error when I send a POST to my API method using IIS 7.5 on my local box.
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What is INSTALL_PARSE_FAILED_NO_CERTIFICATES error?
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I found that this error can now also occur when using the wrong signing config. As described here, Android 7.0 introduces a new signature scheme, V2. The V2 scheme signs the entire APK rather than just the JAR, as is done in the V1 scheme. I...