IPhone jailbreak stopped working?

I lost power during my basketball game tonight, usually though, it isn't a problem. I can usually just open yalu and redo my jailbreak, but this time, things were different. Yalu won't open and neither will cydia. They flash white and then crash. I rebooted my device but that didn't work. Can anyone help?

Haha

Your signing likely expired. You have to use cydia impactor to resign the jailbreak. Reinstall the ipa once every seven days.

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