Local itk-vtk-viewer

It is ready to install the itk-viewer in case it is not installed in qim https://www.notion.so/qim-dtu/Improve-CLI-viz-f4254522fa1e4159b8ce6d9206793b13

qim3d/viz/itk_vtk_viewer/run.py

@@ -37,7 +37,7 @@ def run_within_qim_dir():
         node_bin = get_node_binaries_dir(get_nvm_dir(dir))
         if node_bin is None:
             # Didn't find node binaries there so it looks for enviroment variable to tell it where is nvm folder
-            node_bin = get_node_binaries_dir(Path(os.getenv('NVM_DIR')))
+            node_bin = get_node_binaries_dir(Path(str(os.getenv('NVM_DIR'))))
 
         if node_bin is not None:
             subprocess.run(F'export PATH="$PATH:{viewer_bin}:{node_bin}" && {START_COMMAND}', shell = True, stderr = subprocess.DEVNULL)
@@ -62,7 +62,7 @@ def itk_vtk_viewer(filename:str = None):
     # We do a delay open for the browser, just so that the itk-vtk-viewer has time to start.
     # Timing is not critical, this is just so that the user does not see the "server cannot be reached" page
     def delayed_open():
-        time.sleep(2)
+        time.sleep(3)
         global is_installed
         c.acquire()
         if is_installed: