本帖最后由 Tollainmear 于 2019-9-30 02:10 编辑

https://github.com/SlimeKnights/TinkersConstruct/issues/1722
尝试安装cofhcore解决问题。
另外你的xmn太小了，考虑到新生代对象永远比老年代对象多得多，应该设置-Xmn参数为至少3072MB以上（可以调节）

安装完后提示这个
[00:09:50 WARN]: java.lang.NullPointerException
[00:09:50 WARN]: at org.objectweb.asm.ClassReader.<init>(Unknown Source)
[00:09:50 WARN]: at fiskfille.lightsabers.asm.transformers.ClassTransformerColor.transform(ClassTransformerColor.java:29)
[00:09:50 WARN]: at net.minecraft.launchwrapper.LaunchClassLoader.runTransformers(LaunchClassLoader.java:279)
[00:09:50 WARN]: at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:176)
[00:09:50 WARN]: at java.lang.ClassLoader.loadClass(Unknown Source)
[00:09:50 WARN]: at java.lang.ClassLoader.loadClass(Unknown Source)
[00:09:50 WARN]: at java.lang.Class.forName0(Native Method)
[00:09:50 WARN]: at java.lang.Class.forName(Unknown Source)
[00:09:50 WARN]: at org.spigotmc.Metrics.isMineshafterPresent(Metrics.java:468)
[00:09:50 WARN]: at org.spigotmc.Metrics.postPlugin(Metrics.java:420)
[00:09:50 WARN]: at org.spigotmc.Metrics.access$400(Metrics.java:67)
[00:09:50 WARN]: at org.spigotmc.Metrics$1.run(Metrics.java:239)
[00:09:50 WARN]: at java.util.TimerThread.mainLoop(Unknown Source)
[00:09:50 WARN]: at java.util.TimerThread.run(Unknown Source)
[00:09:50 INFO]: Starting Minecraft server on *:25565
[00:09:51 WARN]: **** FAILED TO BIND TO PORT!
[00:09:51 WARN]: The exception was: java.net.BindException: Address already in use: bind
[00:09:51 WARN]: Perhaps a server is already running on that port?
[00:09:51 WARN]: Can't revert to frozen GameData state without freezing first.
[00:09:51 INFO]: Applying holder lookups
[00:09:51 INFO]: Holder lookups applied
[00:09:51 INFO]: The state engine was in incorrect state POSTINITIALIZATION and forced into state SERVER_STOPPED. Errors may have been discarded.
然后又崩溃了

你都装了些什么插件？一个1.7的服务端，为什么会有spigot的东西？

multiverse-core是1.12的，还有些别的不明版本插件，建议一一检查是否符合1.7.