Linker command failed with exit code 1 - duplicate symbol __TMRbBp

I faced the same problem with archiving on Xcode 8.1.

X Code Version: Version 8.2.1 (8C1002)

The following fix worked on Mar 2019

1) Go to Project & Select your Project

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2) Select Build Settings -

Search for "Enable Bitcode" Set option as "NO"

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3) Most of version will fix this issue, for few other XCode version try this option also,

Search for "Reflection Metadata Level" Set option as "NONE"

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I had similar issues with Version 9.2 (9C40b), the solution is

0) Close Xcode
1) Open project folder in terminal
2) pod update
3) open .
4) open project by clicking Project.xcworkspace

Don't double click Project.xcodeproj to start your xcode project. Instead, close your project and open the xcworkspace.

File -> Close Workspace

File -> Open -> Search your project folder for Project.xcworkspace

All my errors are gone.

It seems to be a bug in Swift. See discussion on Apple developers portal

It is said to be fixed in Xcode version that is about to be released. But for now there is temporary workaround:

Go to your target Build Settings and set Reflection Metadata Level flag to None

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