CPU exceptions

[ChromeUniverse]

Getting weird CPU exceptions after successfully parsing/tokening math expression.
I suspect some sort of issue with the ArduinoQueue library.
Might implement my own arrays and stacks in the near future with the help of this port of Standard C++ for Arduino.

Got math: 123 + 123.
Element #1: 123 is of type NUMBER
Element #2: + is of type OPERATOR
Element #3: 123 is of type NUMBER

assertion "heap != NULL && "free() target pointer is outside heap areas"" fai
led: file "/home/runner/work/esp32-arduino-lib-builder/esp32-arduino-lib-buil
der/esp-idf/components/heap/heap_caps.c", line 267, function: heap_caps_free
abort() was called at PC 0x400d5787 on core 1


ELF file SHA256: 0000000000000000

Backtrace: 0x4008514c:0x3ffb1df0 0x400853c1:0x3ffb1e10 0x400d5787:0x3ffb1e30
0x4008478f:0x3ffb1e60 0x40083f59:0x3ffb1e80 0x4000bec7:0x3ffb1ea0 0x400d2adb:
0x3ffb1ec0 0x400d2ae9:0x3ffb1ee0 0x400d0e70:0x3ffb1f00 0x400d143f:0x3ffb1f20
0x400d3aa1:0x3ffb1fb0 0x400863c1:0x3ffb1fd0

Rebooting...
ets Jun  8 2016 00:22:57