This is probably caused by a feed that has stop_times referencing stops that don't exist (I've seen that locally). It makes Analysis unable to load the feed, and it just fails silently from the user point of view.
22:15:47.402 [Thread-12] INFO com.conveyal.gtfs.GTFSFeed - Generating unique names for patterns
22:15:47.407 [Thread-12] INFO c.conveyal.taui.persistence.MongoMap - Bundle CH Merge 3 (fixed dates) (5a77849a896fd02b831a4bd0) CH Merge 3 (fixed dates) updated by abyrd+sbb@conveyal.com (sbb)
Exception in thread "Thread-12" com.conveyal.taui.AnalysisServerException
at com.conveyal.taui.AnalysisServerException.Unknown(AnalysisServerException.java:77)
at com.conveyal.taui.controllers.BundleController.lambda$null$1(BundleController.java:143)
at java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:193)
at java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1374)
at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:481)
at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:471)
at java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:708)
at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
at java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:499)
at com.conveyal.taui.controllers.BundleController.lambda$create$5(BundleController.java:146)
at java.lang.Thread.run(Thread.java:748)
Also problematic is that the actual exception seems to be swallowed and not reported on the server. If I load the same feed in gtfs-lib locally I see a clearer exception:
317318 [main] INFO com.conveyal.gtfs.GTFSFeed - GTFSError: stop_times line 633, field 'stop_id': 4256
317318 [main] INFO com.conveyal.gtfs.GTFSFeed - GTFSError: stop_times line 634, field 'stop_id': 6601
317318 [main] INFO com.conveyal.gtfs.GTFSFeed - GTFSError: stop_times line 651, field 'stop_id': 6602
317318 [main] INFO com.conveyal.gtfs.GTFSFeed - GTFSError: stop_times line 652, field 'stop_id': 4257
317318 [main] INFO com.conveyal.gtfs.GTFSFeed - GTFSError: transfers line 0: Table is present in zip file, but it has no entries.
317318 [main] INFO com.conveyal.gtfs.GTFSFeed - Building stop to stop times index
317332 [main] INFO com.conveyal.gtfs.GTFSFeed - Building trips per service index
317333 [main] INFO com.conveyal.gtfs.GTFSFeed - Building services per date index
317438 [main] INFO com.conveyal.gtfs.GTFSFeed - Generating unique names for patterns
Exception in thread "main" java.lang.NullPointerException
at com.conveyal.gtfs.GTFSFeed.lambda$namePatterns$15(GTFSFeed.java:568)
at com.conveyal.gtfs.GTFSFeed$$Lambda$67/1248334686.accept(Unknown Source)
at java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183)
at java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:193)
at java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1374)
at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:512)
at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:502)
at java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150)
at java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173)
at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
at java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:418)
at com.conveyal.gtfs.GTFSFeed.namePatterns(GTFSFeed.java:567)
at com.conveyal.gtfs.GTFSFeed.findPatterns(GTFSFeed.java:529)
at com.conveyal.r5.transit.TransitLayer.loadFromGtfs(TransitLayer.java:208)
at com.conveyal.r5.transit.TransitLayer.loadFromGtfs(TransitLayer.java:163)
at com.conveyal.r5.transit.TransportNetwork.fromFiles(TransportNetwork.java:205)
at com.conveyal.r5.transit.TransportNetwork.fromFiles(TransportNetwork.java:241)
at com.conveyal.r5.transit.TransportNetwork.fromDirectory(TransportNetwork.java:275)
at com.conveyal.r5.point_to_point.PointToPointRouterServer.main(PointToPointRouterServer.java:73)
at com.conveyal.r5.R5Main.main(R5Main.java:29)
It appears that this code may be entirely removed in current gtfs-lib. We might have to go looking elsewhere for problems like this that mostly just require null checks.
This is probably caused by a feed that has stop_times referencing stops that don't exist (I've seen that locally). It makes Analysis unable to load the feed, and it just fails silently from the user point of view.
Also problematic is that the actual exception seems to be swallowed and not reported on the server. If I load the same feed in gtfs-lib locally I see a clearer exception: