Make sure you are using Java 21 And do not use the OneDrive directory

I tried installing forge for 1.20.6 and for some reason when i open it, it says: "Java Virtual Machine Launcher": Error: Unable to acces jarfile C:\Users\PC\OneDrive\???????????\forge-1.20.6-50.1.0-installer.jar. I dont have any idea what to do. Can anyone help?

Update I seem to have fixed it by removing the folders made when the server first starts (e.g. config, world) and starting it all again.  

Good days im working on this Costume underground dungeon the plan is creating a mineshaft tunel whit fully functional railway and rail switchs going deep down into the ground      My hypothesis its than than the rails get created before the supporting stone blocks   i was setting blocks whit  Level.setBlock(pos,blkstate,2)  in mode 2 i change it to 10 but the problem persist  in the doorblock class it uses 3 as flag   level.setBlock(p_52750_.above(), p_52751_.setValue(HALF, DoubleBlockHalf.UPPER), 3); i set 3 as flag the problem continues (i du not know what 3 means) this numbers are basically a mistery ===> i need the number mode to set a block into the world whithout doing any checks or triggering neighbors blocks  ############# The nbt class has an Enum to make more redable the code  is in "import net.minecraft.nbt.Tag;" nbtpos = entitydata.getList("blockPos", Tag.TAG_INT);// blockdata contains pos;   if theres something like this for the setBlockMode that would be nice           

this is a really old resurrected post  anyway    //values to nbt  ListTag nbtblockpos = new ListTag(); nbtblockpos.add(IntTag.valueOf(blockPos.getX())); nbtblockpos.add(IntTag.valueOf(blockPos.getY())); nbtblockpos.add(IntTag.valueOf(blockPos.getZ())); entitydata.put("blockPos", nbtblockpos); ListTag nbtpos = new ListTag(); nbtpos.add(DoubleTag.valueOf(Pos.x)); nbtpos.add(DoubleTag.valueOf(Pos.y)); nbtpos.add(DoubleTag.valueOf(Pos.z)); entitydata.put("pos", nbtpos);   //getting things back if(entitydata.contains("blockPos")) { nbtpos = entitydata.getList("blockPos", Tag.TAG_INT);// blockdata contains pos this.blockPos = new BlockPos( nbtpos.getInt(0), nbtpos.getInt(1), nbtpos.getInt(2) ); } this.pos = null; if(entitydata.contains("pos")) { nbtpos = entitydata.getList("pos", Tag.TAG_DOUBLE);// blockdata contains pos this.Pos = new Vec3( nbtpos.getDouble(0), nbtpos.getDouble(1), nbtpos.getDouble(2) ); }