RUNTIME ERROR : failed to allocate 1048588 byte allocation with 285152 with free bytes and 278 KB until OOM

[dora_paz (Dora)]

Most probably you have more than one screen and you don’t close them correctly or you have large images in your assets and you are running out of memory. See tips 1 and 2 in the post below

@Taifun

• Use different screens wisely
  Before starting to create another screen, first you should think about is it really necessary? See also Building apps with many screens and SteveJG’s post about advantages/disadvantages , because in only one screen you also can use vertical arrangements to simulate different screens, just set the arrangements to visible = true/false as needed…
  If you decided to use different screens, then you should switch them correctly, else you will run out of memory after a while… The recommended method of switching screens in App Inventor
• App Inventor works best if you use images whose size matches the size you want them to appear on your screen. If you import larger images into your app, your app may run out of system memory. Using Images with App Inventor