Should Frank Lampard continue with Kepa Arrizabalaga as his No.1?

By Oladele Emmanuel: Chelsea under-fire goalkeeper Kepa Arrizabalaga committed yet another blunder on Saturday that led to Chelsea's 1-0 loss in the English Premier League game against Newcastle United.

The Spaniard has been error-prone sinice the beginning of the 2019/2020 English Premier League season and has cost Chelsea in many games this season.
Weeks ago, Chelsea Manager Frank Lampard sought for replacement for Kepa but may have not gotten one as Kepa continues to put Chelsea in the danger of not reaching the group stage of next the UEFA Champions League.

The big question here is why should Lampard continue to use Kepa?