Cannot read property "width" from undefined core: 78

[Jerzozwierz123]

Platform
Windows 10

Mindustry Version
126.1

Pictologic Version the number please
1.5.7

Steps to reproduce
Upolad image and click export
Place an X in the box below (no spaces) to show that you have read the following:

• I have installed the 6.0 version of ui-lib.
• ui lib version 2.16.6
  

[deltanedas]

fixed