Guru Meditation Error: Core 1 panic'ed (IntegerDivideByZero). Exception was unhandled.

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Guru Meditation Error: Core  1 panic'ed (IntegerDivideByZero). Exception was unhandled.

Core  1 register dump:
PC      : 0x400d7225  PS      : 0x00060030  A0      : 0x800d7360  A1      : 0x3ffb2640
A2      : 0x3ffd0d68  A3      : 0x0000003f  A4      : 0x00000016  A5      : 0x000000ff  
A6      : 0x000000ff  A7      : 0x000000ff  A8      : 0x00000000  A9      : 0x00000006
A10     : 0xfffffff9  A11     : 0x00000000  A12     : 0x3ffd2568  A13     : 0x00000008  
A14     : 0x00000000  A15     : 0x00000001  SAR     : 0x00000020  EXCCAUSE: 0x00000006
EXCVADDR: 0x00000000  LBEG    : 0x4008b115  LEND    : 0x4008b125  LCOUNT  : 0xffffffff  


Backtrace:0x400d7222:0x3ffb26400x400d735d:0x3ffb2680 0x400d7372:0x3ffb26b0 0x4019069a:0x3ffb26d0 0x4019063d:0x3ffb26f0 0x40190726:0x3ffb2730 0x401906b5:0x3ffb2750 0x401907a1:0x3ffb2770 0x400e0771:0x3ffb2790 0x400fac26:0x3ffb2820 
  #0  0x400d7222:0x3ffb26400 in String::replace(char const*, String const&) at .platformio/packages/framework-arduinoespressif32/cores/esp32/WString.h:261
      (inlined by) add_warning_first_cycle at moduleair.cpp:1875

ModuleAir_V2.1/moduleair.cpp

Line 1875 in 3749112

s.replace("{v}", String(((time_to_first + 500) / 1000)));