How very vague of you, Minecraft.
For reference, I do have Lambda Client ver 3.1 installed for 1.12.2, maybe that's causing the problem.
Log is here (and quite short at that).
08:12:03.443
Preparing to launch minecraft client for 1.18.2-forge-40.1.51
08:12:06.084
Minecraft client 1.18.2-forge-40.1.51 is ready to start.
08:12:06.084
Starting!
08:12:06.523
Version does not support log configuration, will assume one plaintext entry per line
08:12:08.781
2022-06-14 08:12:08,770 main WARN Advanced terminal features are not available in this environment
08:12:08.982
[08:12:08] [main/INFO] [cp.mo.mo.Launcher/MODLAUNCHER]: ModLauncher running: args [--username, TokuX, --version, 1.18.2-forge-40.1.51, --gameDir, C:\Users\alexr\AppData\Roaming\.minecraft, --assetsDir, C:\Users\alexr\AppData\Roaming\.minecraft\assets, --assetIndex, 1.18, --uuid, 8fdf5f162cfb47ceaecf8d749d92e460, --accessToken, ????????, --clientId, MjExNDdlOWUtNGE5NS00NGE0LWI0MjItM2M3NmU4NTY0M2Zl, --xuid, 2535426075859804, --userType, msa, --versionType, release, --launchTarget, forgeclient, --fml.forgeVersion, 40.1.51, --fml.mcVersion, 1.18.2, --fml.forgeGroup, net.minecraftforge, --fml.mcpVersion, 20220404.173914]
08:12:08.986
[08:12:08] [main/INFO] [cp.mo.mo.Launcher/MODLAUNCHER]: ModLauncher 9.1.3+9.1.3+main.9b69c82a starting: java version 17.0.1 by Microsoft
08:12:09.156
Exception in thread "main" java.lang.module.ResolutionException: Module lambda contains package org.spongepowered.tools.obfuscation.mirror, module org.spongepowered.mixin exports package org.spongepowered.tools.obfuscation.mirror to lambda
08:12:09.156
at java.base/java.lang.module.Resolver.resolveFail(Resolver.java:901)
08:12:09.156
at java.base/java.lang.module.Resolver.failTwoSuppliers(Resolver.java:807)
08:12:09.156
at java.base/java.lang.module.Resolver.checkExportSuppliers(Resolver.java:755)
08:12:09.156
at java.base/java.lang.module.Resolver.finish(Resolver.java:380)
08:12:09.156
at java.base/java.lang.module.Configuration.<init>(Configuration.java:140)
08:12:09.156
at java.base/java.lang.module.Configuration.resolveAndBind(Configuration.java:494)
08:12:09.156
at MC-BOOTSTRAP/
[email protected]/cpw.mods.modlauncher.ModuleLayerHandler.buildLayer(ModuleLayerHandler.java:70)
08:12:09.156
at MC-BOOTSTRAP/
[email protected]/cpw.mods.modlauncher.ModuleLayerHandler.buildLayer(ModuleLayerHandler.java:82)
08:12:09.156
at MC-BOOTSTRAP/
[email protected]/cpw.mods.modlauncher.TransformationServicesHandler.discoverServices(TransformationServicesHandler.java:128)
08:12:09.156
at MC-BOOTSTRAP/
[email protected]/cpw.mods.modlauncher.Launcher.run(Launcher.java:86)
08:12:09.156
at MC-BOOTSTRAP/
[email protected]/cpw.mods.modlauncher.Launcher.main(Launcher.java:77)
08:12:09.156
at MC-BOOTSTRAP/
[email protected]/cpw.mods.modlauncher.BootstrapLaunchConsumer.accept(BootstrapLaunchConsumer.java:26)
08:12:09.156
at MC-BOOTSTRAP/
[email protected]/cpw.mods.modlauncher.BootstrapLaunchConsumer.accept(BootstrapLaunchConsumer.java:23)
08:12:09.156
at
[email protected]/cpw.mods.bootstraplauncher.BootstrapLauncher.main(BootstrapLauncher.java:149)
08:12:09.232
Process crashed with exit code 1
