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"No js script engine found" error in Mule runtime 4.9.19+

게시 일자: Jul 23, 2026
상세 설명
The user encountered a startup failure while upgrading to version 4.9.19. One environment started normally after upgrade, but another failed to start with a No js script engine found error that prevented parsing conf/scheduler-pools.conf.
솔루션

1. Add the JVM flag to wrapper.conf:

wrapper.java.additional.=-Dtruffle.UseFallbackRuntime=true

 

Please use the next available wrapper.java.additional sequence number.

2. Use the above flag to force Truffle to use DefaultTruffleRuntime in interpreter-only mode, which bypasses JVMCI instead of using the GraalJS runtime.

Knowledge 기사 번호

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