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java.lang.IndexOutOfBoundsException: len=-1485

Please describe what you did before the error occurred. java.lang.IndexOutOfBoundsException: len=-1485 at java.desktop/sun.font.FontDesignMetrics.charsWidth ...
GitHub

IndexOutOfBoundsException in java.util.ArrayList used inside ContentAssistContextFactory

No way to reproduce this is known, so for now this ticket is only intended to collect information and as a basis for further investigation. Stack trace: ERROR - java.lang.IndexOutOfBoundsException: ...
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内部エラー： java.lang.IllegalArgumentException: カスタム実行環境 ...

エラーメッセージ「Internal error: java.lang.IllegalArgumentException: Could not find specification for custom execution environment profile 'JavaSE-18' in the target ...