fix microsoft#200279

Author: meganrogge

src/vs/workbench/contrib/tasks/browser/terminalTaskSystem.ts

@@ -1180,7 +1180,7 @@ export class TerminalTaskSystem extends Disposable implements ITaskSystem {
 			shellLaunchConfig.args = windowsShellArgs ? combinedShellArgs.join(' ') : combinedShellArgs;
 			if (task.command.presentation && task.command.presentation.echo) {
 				if (needsFolderQualification && workspaceFolder) {
-					const folder = cwd ? path.posix.basename(cwd.toString()) : workspaceFolder.name;
+					const folder = cwd && typeof cwd === 'object' && 'path' in cwd ? path.basename(cwd.path) : workspaceFolder.name;
 					shellLaunchConfig.initialText = this.taskShellIntegrationStartSequence(cwd) + formatMessageForTerminal(nls.localize({
 						key: 'task.executingInFolder',
 						comment: ['The workspace folder the task is running in', 'The task command line or label']