Arduino IDE 1.8.4 won't start after using keyboard shortcut to set font size to 0

[720candy]

I can't install program pls help me....

install Arduino --> pop up screen --> disappear --> doesn't work anything.

code-----

java.lang.IllegalArgumentException: Font size must be > 0
at org.fife.ui.rtextarea.RTextAreaBase.setFont(RTextAreaBase.java:986)
at org.fife.ui.rsyntaxtextarea.RSyntaxTextArea.setFont(RSyntaxTextArea.java:2510)
at processing.app.EditorTab.applyPreferences(EditorTab.java:322)
at processing.app.EditorTab.(EditorTab.java:110)
at processing.app.Editor.addTab(Editor.java:1672)
at processing.app.Editor.createTabs(Editor.java:1645)
at processing.app.Editor.handleOpenInternal(Editor.java:1944)
at processing.app.Editor.(Editor.java:340)
at processing.app.Base.handleOpen(Base.java:833)
at processing.app.Base.handleOpen(Base.java:819)
at processing.app.Base.handleOpen(Base.java:815)
at processing.app.Base.handleNew(Base.java:754)
at processing.app.Base.(Base.java:460)
at processing.app.Base.main(Base.java:140)
logout
Saving session...
...copying shared history...
...saving history...truncating history files...
...completed.

[facchinm]

closing as duplicate of #6708