LCD Code causes Arduino to not execute void setup AND void loop

Projects Programming
23

16:29:47.131 ->
16:30:19.031 -> ********************************************************************
16:30:19.078 -> Serial Initialized
16:30:19.124 -> --------------------------------------------------------------------
16:30:19.171 -> I2CexpDiag - i2c LCD i/o expander backpack diagnostic tool
16:30:19.265 -> --------------------------------------------------------------------
16:30:19.312 -> hd44780 lib version: 1.3.2
16:30:19.359 -> --------------------------------------------------------------------
16:30:19.405 -> Reported Arduino Revision: 1.8.16
16:30:19.452 -> CPU ARCH: AVR - F_CPU: 16000000
16:30:19.499 -> --------------------------------------------------------------------
16:30:19.546 -> SDA digital pin: 18 A4
16:30:19.593 -> SCL digital pin: 19 A5
16:30:19.640 -> --------------------------------------------------------------------
16:30:19.687 -> Checking for required external I2C pull-up on SDA - STUCK LOW
16:30:19.733 -> Checking for required external I2C pull-up on SCL - YES
16:30:19.827 -> ********************************************************************
16:30:19.874 -> ERROR: SDA or SCL stuck pin
16:30:19.921 -> ********************************************************************
16:30:19.968 -> I2C bus not usable