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E11000 duplicate key error index in mongodb mongoose

... 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 index...
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“The 'Microsoft.ACE.OLEDB.12.0' provider is not registered on the local machine” Error in importing

... this problem shows up for me after changing my SSIS 64 bit execution turned on.also note that the instalation resolved the issue right after finishing and does not need any restarting – Iman Mar 23 '14 at 10:21 ...
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How do I remove javascript validation from my eclipse project?

I am using eclipse on my project and while messing around with my eclipse settings, I turned on Javascript support. Now eclipse complains that JQuery library has errors in it and is not letting me compile the project. Does anyone know how to turn javascript validation off? ...
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The selected run destination is not valid for this action

...oject that has always been iphone/ipad. I can't build it now because for some reason my only "Scheme" option is "MyApp My Mac 64-bit". How can I get this set back to iphone/ipad simulator and devices? My "Targeted Device Family" setting is iPhone/iPad. ...
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Can't start Eclipse - Java was started but returned exit code=13

I am trying to get my first taste of Android development using Eclipse. I ran into this problem when trying to run Eclipse, having installed version 4.2 only minutes ago. ...
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The server committed a protocol violation. Section=ResponseStatusLine ERROR

... The same can be placed inside <configuration> root tag at the App.copnfig for non-web applications (for example, I fixed WPF app that way - thanks!). – Yury Schkatula Aug 20 '13 at 15:39...
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Remove blank lines with grep

I tried grep -v '^$' in Linux and that didn't work. This file came from a Windows file system. 14 Answers ...
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Undo git reset --hard with uncommitted files in the staging area

...rder to add a file to the index, git adds it to the object database, which means it can be recovered so long as garbage collection hasn't happened yet. There's an example of how to do this given in Jakub Narębski's answer here: Recovering added file after doing git reset --hard HEAD^ However, ...
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ADB Install Fails With INSTALL_FAILED_TEST_ONLY

...hello.apk pkg: /tmp/hello.apk Success I was able to reproduce the same issue and the above solved it. If your APK is outside the device (on your desktop), then below command would do it: $ adb install -t hello.apk ...
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How to get Chrome to allow mixed content?

Chrome browser by default is blocking mixed content. How do I adjust my settings/configuration to allow mixed content without making any adjustments on the UI every time? ...