cannot deploy, invalid version number

Error message from server.log:

2022-09-27 09:31:26,426 ERROR [com.exlibris.core.infra.svc.impl.manager.PluginManagerImpl] (Thread-3) [] Plugin /operational_shared/plugins/custom/TechnicalMetadataExtractorMediaInfoPlugin.jar has errors.
java.lang.Exception: Operation failed to complete. Operation failed to complete. For input string: "1.ß"
        at com.exlibris.core.infra.svc.impl.manager.PluginManagerImpl.getPluginMetadatas(PluginManagerImpl.java:183) ~[core-infra-svc-impl.jar:?]
        at com.exlibris.core.infra.svc.impl.manager.PluginManagerImpl.getPluginFromDirectory(PluginManagerImpl.java:624) [core-infra-svc-impl.jar:?]
        at com.exlibris.core.infra.svc.impl.manager.PluginManagerImpl.getAllNewPlugins(PluginManagerImpl.java:144) [core-infra-svc-impl.jar:?]