Assets/Network System/NetworkConnectionManager.cs(239,67): error CS0103: The name 'UnityWebRequestAdapter' does not exist in the current context
Assets/Network System/NetworkConnectionManager.cs(293,25): error CS1061: 'IClient' does not contain a definition for 'NewSocket' and no accessible extension method 'NewSocket' accepting a first argument of type 'IClient' could be found (are you missing a using directive or an assembly reference?)
Assets/AstarPathfindingProject/Core/Serialization/JsonSerializer.cs(15,19): error CS0234: The type or namespace name 'Ionic' does not exist in the namespace 'Pathfinding' (are you missing an assembly reference?)
Assets/AstarPathfindingProject/Generators/Utilities/TileHandler.cs(4,19): error CS0234: The type or namespace name 'ClipperLib' does not exist in the namespace 'Pathfinding' (are you missing an assembly reference?)
Assets/AstarPathfindingProject/Generators/Utilities/TileHandler.cs(11,20): error CS0234: The type or namespace name 'Poly2Tri' does not exist in the namespace 'Pathfinding' (are you missing an assembly reference?)
Assets/AstarPathfindingProject/Generators/Utilities/TileHandler.cs(812,28): error CS0246: The type or namespace name 'Poly2Tri' could not be found (are you missing a using directive or an assembly reference?)
Assets/AstarPathfindingProject/Generators/Utilities/TileHandler.cs(812,60): error CS0246: The type or namespace name 'Poly2Tri' could not be found (are you missing a using directive or an assembly reference?)
Assets/AstarPathfindingProject/Generators/Utilities/TileHandler.cs(830,21): error CS0246: The type or namespace name 'IntPoint' could not be found (are you missing a using directive or an assembly reference?)
Assets/AstarPathfindingProject/Generators/Utilities/TileHandler.cs(830,99): error CS0234: The type or namespace name 'ClipperLib' does not exist in the namespace 'Pathfinding' (are you missing an assembly reference?)
Assets/AstarPathfindingProject/Generators/Utilities/TileHandler.cs(844,22): error CS0246: The type or namespace name 'IntPoint' could not be found (are you missing a using directive or an assembly reference?)
Assets/AstarPathfindingProject/Generators/Utilities/TileHandler.cs(844,109): error CS0246: The type or namespace name 'IntPoint' could not be found (are you missing a using directive or an assembly reference?)
Assets/AstarPathfindingProject/Generators/Utilities/TileHandler.cs(844,153): error CS0234: The type or namespace name 'ClipperLib' does not exist in the namespace 'Pathfinding' (are you missing an assembly reference?)
Assets/AstarPathfindingProject/Generators/Utilities/TileHandler.cs(879,23): error CS0246: The type or namespace name 'IntPoint' could not be found (are you missing a using directive or an assembly reference?)
Assets/AstarPathfindingProject/Generators/Utilities/TileHandler.cs(879,44): error CS0246: The type or namespace name 'IntPoint' could not be found (are you missing a using directive or an assembly reference?)
Assets/AstarPathfindingProject/Generators/Utilities/TileHandler.cs(879,82): error CS0234: The type or namespace name 'ClipperLib' does not exist in the namespace 'Pathfinding' (are you missing an assembly reference?)
Assets/AstarPathfindingProject/Generators/Utilities/TileHandler.cs(35,12): error CS0246: The type or namespace name 'Clipper' could not be found (are you missing a using directive or an assembly reference?)
Assets/AstarPathfindingProject/Generators/Utilities/TileHandler.cs(383,16): error CS0246: The type or namespace name 'IntPoint' could not be found (are you missing a using directive or an assembly reference?)
Assets/AstarPathfindingProject/Core/Serialization/JsonSerializer.cs(486,3): error CS0246: The type or namespace name 'ZipEntry' could not be found (are you missing a using directive or an assembly reference?)
Assets/AstarPathfindingProject/Core/Serialization/JsonSerializer.cs(757,48): error CS0246: The type or namespace name 'ZipEntry' could not be found (are you missing a using directive or an assembly reference?)
Assets/AstarPathfindingProject/Core/Serialization/JsonSerializer.cs(770,36): error CS0246: The type or namespace name 'ZipEntry' could not be found (are you missing a using directive or an assembly reference?)
Assets/AstarPathfindingProject/Core/Serialization/JsonSerializer.cs(785,38): error CS0246: The type or namespace name 'ZipEntry' could not be found (are you missing a using directive or an assembly reference?)
Assets/AstarPathfindingProject/Core/Serialization/JsonSerializer.cs(789,44): error CS0246: The type or namespace name 'ZipEntry' could not be found (are you missing a using directive or an assembly reference?)
Assets/AstarPathfindingProject/Core/Serialization/JsonSerializer.cs(167,11): error CS0246: The type or namespace name 'ZipFile' could not be found (are you missing a using directive or an assembly reference?)
I tried to open my project in Linux: