DynamicBackups throws a NullPointerException

[Ad-Blokker]

The following error is throwed when DynamicBackups is enabled:

[00:45:40] [Craft Scheduler Thread - 18/WARN]: [ServerBackup] Plugin ServerBackup v2.9.4 generated an exception while executing task 14096
java.lang.NullPointerException: Nodes must be provided.
        at org.yaml.snakeyaml.nodes.NodeTuple.<init>(NodeTuple.java:26) ~[snakeyaml-1.33.jar:?]
        at org.yaml.snakeyaml.representer.Representer.representJavaBeanProperty(Representer.java:173) ~[snakeyaml-1.33.jar:?]
        at org.yaml.snakeyaml.representer.Representer.representJavaBean(Representer.java:110) ~[snakeyaml-1.33.jar:?]
        at org.yaml.snakeyaml.representer.Representer$RepresentJavaBean.representData(Representer.java:83) ~[snakeyaml-1.33.jar:?]
        at org.yaml.snakeyaml.representer.BaseRepresenter.representData(BaseRepresenter.java:122) ~[snakeyaml-1.33.jar:?]
        at org.yaml.snakeyaml.representer.BaseRepresenter.represent(BaseRepresenter.java:81) ~[snakeyaml-1.33.jar:?]
        at org.bukkit.configuration.file.YamlConfiguration.toNodeTree(YamlConfiguration.java:191) ~[spigot-api-1.19.4-R0.1-SNAPSHOT.jar:?]
        at org.bukkit.configuration.file.YamlConfiguration.toNodeTree(YamlConfiguration.java:189) ~[spigot-api-1.19.4-R0.1-SNAPSHOT.jar:?]
        at org.bukkit.configuration.file.YamlConfiguration.toNodeTree(YamlConfiguration.java:189) ~[spigot-api-1.19.4-R0.1-SNAPSHOT.jar:?]
        at org.bukkit.configuration.file.YamlConfiguration.toNodeTree(YamlConfiguration.java:189) ~[spigot-api-1.19.4-R0.1-SNAPSHOT.jar:?]
        at org.bukkit.configuration.file.YamlConfiguration.toNodeTree(YamlConfiguration.java:189) ~[spigot-api-1.19.4-R0.1-SNAPSHOT.jar:?]
        at org.bukkit.configuration.file.YamlConfiguration.toNodeTree(YamlConfiguration.java:189) ~[spigot-api-1.19.4-R0.1-SNAPSHOT.jar:?]
        at org.bukkit.configuration.file.YamlConfiguration.toNodeTree(YamlConfiguration.java:189) ~[spigot-api-1.19.4-R0.1-SNAPSHOT.jar:?]
        at org.bukkit.configuration.file.YamlConfiguration.saveToString(YamlConfiguration.java:79) ~[spigot-api-1.19.4-R0.1-SNAPSHOT.jar:?]
        at org.bukkit.configuration.file.FileConfiguration.save(FileConfiguration.java:65) ~[spigot-api-1.19.4-R0.1-SNAPSHOT.jar:?]
        at de.seblii.serverbackup.ServerBackup.saveBpInf(ServerBackup.java:351) ~[?:?]
        at de.seblii.serverbackup.DynamicBackup$2.run(DynamicBackup.java:76) ~[?:?]
        at org.bukkit.craftbukkit.v1_19_R3.scheduler.CraftTask.run(CraftTask.java:82) ~[spigot-1.19.4-R0.1-SNAPSHOT.jar:3720-Spigot-d2fdfe3-19de355]
        at org.bukkit.craftbukkit.v1_19_R3.scheduler.CraftAsyncTask.run(CraftAsyncTask.java:54) ~[spigot-1.19.4-R0.1-SNAPSHOT.jar:3720-Spigot-d2fdfe3-19de355]
        at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) ~[?:?]
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) ~[?:?]

This error was also reported in the Discord and seems to be a known issue:

Sebi — Today at 10:39
thanks for reporting this, it's a known error - I'm still looking for a solution, but it doesn't seem to affect the functionality

[Ad-Blokker]

[01:47:57 WARN]: [ServerBackup] Plugin ServerBackup v2.9.4 generated an exception while executing task 4319
java.lang.IndexOutOfBoundsException: Index 10 out of bounds for length 9
        at jdk.internal.util.Preconditions.outOfBounds(Unknown Source) ~[?:?]
        at jdk.internal.util.Preconditions.outOfBoundsCheckIndex(Unknown Source) ~[?:?]
        at jdk.internal.util.Preconditions.checkIndex(Unknown Source) ~[?:?]
        at java.util.Objects.checkIndex(Unknown Source) ~[?:?]
        at java.util.ArrayList.get(Unknown Source) ~[?:?]
        at de.seblii.serverbackup.DynamicBackup$1.run(DynamicBackup.java:52) ~[ServerBackup-2.9.4.jar:?]
        at org.bukkit.craftbukkit.v1_19_R3.scheduler.CraftTask.run(CraftTask.java:101) ~[paper-1.19.4.jar:git-Paper-504]
        at org.bukkit.craftbukkit.v1_19_R3.scheduler.CraftAsyncTask.run(CraftAsyncTask.java:57) ~[paper-1.19.4.jar:git-Paper-504]
        at com.destroystokyo.paper.ServerSchedulerReportingWrapper.run(ServerSchedulerReportingWrapper.java:22) ~[paper-1.19.4.jar:?]
        at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) ~[?:?]
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) ~[?:?]
        at java.lang.Thread.run(Unknown Source) ~[?:?]

[02:02:46 WARN]: [ServerBackup] Plugin ServerBackup v2.9.4 generated an exception while executing task 25138
java.lang.IndexOutOfBoundsException: Index 52 out of bounds for length 51
        at jdk.internal.util.Preconditions.outOfBounds(Unknown Source) ~[?:?]
        at jdk.internal.util.Preconditions.outOfBoundsCheckIndex(Unknown Source) ~[?:?]
        at jdk.internal.util.Preconditions.checkIndex(Unknown Source) ~[?:?]
        at java.util.Objects.checkIndex(Unknown Source) ~[?:?]
        at java.util.ArrayList.get(Unknown Source) ~[?:?]
        at de.seblii.serverbackup.DynamicBackup$1.run(DynamicBackup.java:52) ~[ServerBackup-2.9.4.jar:?]
        at org.bukkit.craftbukkit.v1_19_R3.scheduler.CraftTask.run(CraftTask.java:101) ~[paper-1.19.4.jar:git-Paper-504]
        at org.bukkit.craftbukkit.v1_19_R3.scheduler.CraftAsyncTask.run(CraftAsyncTask.java:57) ~[paper-1.19.4.jar:git-Paper-504]
        at com.destroystokyo.paper.ServerSchedulerReportingWrapper.run(ServerSchedulerReportingWrapper.java:22) ~[paper-1.19.4.jar:?]
        at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) ~[?:?]
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) ~[?:?]
        at java.lang.Thread.run(Unknown Source) ~[?:?]

[02:29:56 WARN]: [ServerBackup] Plugin ServerBackup v2.9.4 generated an exception while executing task 76361
java.lang.NullPointerException: Cannot invoke "org.bukkit.Chunk.getWorld()" because the return value of "java.util.List.get(int)" is null
        at de.seblii.serverbackup.DynamicBackup$1.run(DynamicBackup.java:52) ~[ServerBackup-2.9.4.jar:?]
        at org.bukkit.craftbukkit.v1_19_R3.scheduler.CraftTask.run(CraftTask.java:101) ~[paper-1.19.4.jar:git-Paper-504]
        at org.bukkit.craftbukkit.v1_19_R3.scheduler.CraftAsyncTask.run(CraftAsyncTask.java:57) ~[paper-1.19.4.jar:git-Paper-504]
        at com.destroystokyo.paper.ServerSchedulerReportingWrapper.run(ServerSchedulerReportingWrapper.java:22) ~[paper-1.19.4.jar:?]
        at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) ~[?:?]
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) ~[?:?]
        at java.lang.Thread.run(Unknown Source) ~[?:?]

[yassirlaaouissi]

have you tried try-catching the source code?