[14:36:12][Clientthread/ERROR]:Invalidiconforserverlocalhost(localhost)java.lang.IllegalArgumentException:Illegalbase64character a
atjava.util.Base64$Decoder.decode0(Base64.java:714)~[?:1.8.0_51]atjava.util.Base64$Decoder.decode(Base64.java:623)~[?:1.8.0_51]atclp.g(SourceFile:212)[1.13.jar:?]atclp.a(SourceFile:144)[1.13.jar:?]atcgv.a(SourceFile:35)[1.13.jar:?]atcha.a(SourceFile:391)[1.13.jar:?]atcha.a(SourceFile:194)[1.13.jar:?]atclm.a(SourceFile:310)[1.13.jar:?]atctn.a(SourceFile:792)[1.13.jar:?]atcfi.c(SourceFile:847)[1.13.jar:?]atcfi.a(SourceFile:392)[1.13.jar:?]atnet.minecraft.client.main.Main.main(SourceFile:144)[1.13.jar:?]
Edit: to clarify, it happens when the game tries to display server icon from an older server (1.12.2 or older)
Can confirm for 1.13
Edit: to clarify, it happens when the game tries to display server icon from an older server (1.12.2 or older)