Hey folks, I need some help regarding an issues with the RSI on my trading chart, never got this problem until now.

What just happened is: I was trading a coin holding a long position, kept implementing a indicators and had also opened a multiple 3,4 tabs in google for the same coin but when the MACD was very bullish and the RSI line was like nearly a 80 point around then suddenly RSI dropped straight to zero. Price didn't quickly crashed (dropped but not in a heavy way). For more than 10 minutes RSI point showed up @ 0.00, now value has come back much accurately but that RSI line ain't working the way what normally would for trading (got jammed in the bottom line, no movement). Didn't understand the reason behind it. Needed help pls.