gather_() was deprecated in tidyr 1.2.0.

[JingyiShi]

I'm using the ggcoxdiagnostics() function and getting the following warnings:

Warning message:
gather_() was deprecated in tidyr 1.2.0.
ℹ Please use gather() instead.
ℹ The deprecated feature was likely used in the survminer package.
Please report the issue at https://github.com/kassambara/survminer/issues.
This warning is displayed once every 8 hours.
Call lifecycle::last_lifecycle_warnings() to see where this warning was generated.

[kassambara]

fixed in #579 and #665