Spotify closes in Macbook Air Mojave 10.14.3

[jpsalinasg89]

Plan Premium

Country Italy 

Device Macbook Air Early 2014

Operating System Mojave 10.14.3

My Question or Issue

Since yesterday Spotify started to close after I used the Activity Manager to close forcedly certain processes (like Spotify and Spotify Helper) because the RAM was full and the Mac was slow. I checked other answers and I followed their solutions: I uninstalled deeply Spotify (deleting every file related to the App) four times and reinstalled Spotify the same number of times times. I also updated the operating system to the most recent version. I also updated Flash Player and nothing seems to work.

[BikerChuck]

Same problem on iMac