Fatal Error during reading .wav file.

[melnykarena]

Here is issue text : "fread(): Argument #2 ($length) must be greater than 0";
It happens in analyzeMetadata function inside "if ($size >= 20)";
It happens for some .wav files. And i'm using actual .wav files.
I tried to convert my .wav file to .wav again using random online converter and this issue gone. I have been using this library for 2 years and have never got this issue (processed huge amount of files). And recently i started getting this issue again and again.
Can you suggest what should i do in this situation?