keychain-swift: Random crash while storing a string in keychain

• Library setup method: CocoaPods
• Version of the library: 8.0.
• Xcode version: 10.1.
• OS version. iOS 11-12

Hello, some users of my app are facing a random crash while setting a string in the keychain.

I found only this few lines inside the crashlytics log:

#9. Crashed: com.apple.root.default-qos
[...]
25 KeychainSwift                  0x10513e408 $S13KeychainSwiftAAC6deleteySbSSF + 636
26 KeychainSwift                  0x10513d664 $S13KeychainSwiftAAC3set_6forKey10withAccessSb10Foundation4DataV_SSAA0abG7OptionsOSgtF + 108
27 KeychainSwift                  0x10513db20 $S13KeychainSwiftAAC3set_6forKey10withAccessS2b_SSAA0abG7OptionsOSgtF + 220

This crash affected only 0,1% of my app users, so i can’t figure it out which could be the cause.

Help me to investigate, I’d really appreciate it, Thanks