UnsupportedClassVersionError

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#68 opened on Apr 24, 2019 5 comments 1 reaction 0 assignees View on GitHub

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Assessment

Difficulty: 3/5
Estimated time: 1-2 days
Newbie friendliness: 25/100

Issue type: Bug
Clarity: Needs clarification
Activity status: Stale
Tech stack: firebase, java
Domain: databases, devtools

Research direction

The report names no repository files or tests. Start by reproducing the firebase setup:emulators:firestore and firebase serve --only firestore commands, then inspect how the Firestore emulator is launched and which Java runtime it requires. Done means the emulator starts without UnsupportedClassVersionError.

Written by the indexing model from the issue text.

Description

type: bug

Running the emulator after firebase setup:emulators:firestore gives the following error:

firebase serve --only firestore                                                                
✔  firestore: started on http://localhost:8080
⚠  firestore: Exception in thread "main"
⚠  firestore: java.lang.UnsupportedClassVersionError: com/google/cloud/datastore/emulator/firestore/CloudFirestore : Unsupported major.minor version 52.0
        at java.lang.ClassLoader.defineClass1(Native Method)
        at java.lang.ClassLoader.defineClass(ClassLoader.java:800)
        at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
        at java.net.URLClassLoader.defineClass(URLClassLoader.java:449)
⚠  firestore:
        at java.net.URLClassLoader.access$100(URLClassLoader.java:71)
        at java.net.URLClassLoader$1.run(URLClassLoader.java:361)
        at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:425)
⚠  firestore:
        at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:358)
        at sun.launcher.LauncherHelper.checkAndLoadMain(LauncherHelper.java:482)
⚠  firestore:


Error: firestore: emulator has exited with code: 1

Dominant language: JavaScript
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