In the HTML5 canvas project, sound clips sometimes play and sometimes they don't

I have made multiple animations on HTML5 Canvas. I have used voice-overs and sound effects in all the animations. Sometimes, all sounds play perfectly and sometimes 1-2 sounds or voiceover doesn't play. Animation keeps playing and other sounds after skipped sound also play. These non-played sounds are random, and each time a different sound does not play, even when replaying within animation or refresh webpage.

All sounds are exported and placed as MP3 192kbps bitrate or 128kbps bitrate in 44.1 KHz.