i got this error

PHP Warning: gmp_add(): Unable to convert variable to GMP and it’s telling me to look at line 314

$number = $this->_math_functions[‘str’]($this->_math_functions[‘add’]($number, $pos * pow($alphabet_length, ($input_length – $i – 1))));

i see that on the github you fixed and change the method and the way the function is done, but this plugin didn’t get update since a while…

i have php 7.