diff --git a/backend/PDK_libs/primitives/edge_couplers/EC_SiN400_1310_1p0dB_L635_A0_QY_202604/EC_SiN400_1310_1p0dB_L635_A0_QY_202604.png b/PDK_libs/primitives/edge_couplers/EC_SiN400_1310_1p0dB_L635_A0_QY_202604/EC_SiN400_1310_1p0dB_L635_A0_QY_202604.png
similarity index 100%
rename from backend/PDK_libs/primitives/edge_couplers/EC_SiN400_1310_1p0dB_L635_A0_QY_202604/EC_SiN400_1310_1p0dB_L635_A0_QY_202604.png
rename to PDK_libs/primitives/edge_couplers/EC_SiN400_1310_1p0dB_L635_A0_QY_202604/EC_SiN400_1310_1p0dB_L635_A0_QY_202604.png
diff --git a/backend/PDK_libs/primitives/edge_couplers/EC_SiN400_1310_1p0dB_L635_A0_QY_202604/EC_SiN400_1310_1p0dB_L635_A0_QY_202604.yml b/PDK_libs/primitives/edge_couplers/EC_SiN400_1310_1p0dB_L635_A0_QY_202604/EC_SiN400_1310_1p0dB_L635_A0_QY_202604.yml
similarity index 100%
rename from backend/PDK_libs/primitives/edge_couplers/EC_SiN400_1310_1p0dB_L635_A0_QY_202604/EC_SiN400_1310_1p0dB_L635_A0_QY_202604.yml
rename to PDK_libs/primitives/edge_couplers/EC_SiN400_1310_1p0dB_L635_A0_QY_202604/EC_SiN400_1310_1p0dB_L635_A0_QY_202604.yml
diff --git a/README.md b/README.md
index 5d7ad96..dd27da4 100644
--- a/README.md
+++ b/README.md
@@ -1,2 +1,4 @@
 # mxpic_EDA
 The EDA coding for the layout for optihk
+# requirements
+flask
\ No newline at end of file
diff --git a/backend/__pycache__/database.cpython-39.pyc b/backend/__pycache__/database.cpython-39.pyc
index 98258fa..12c35bd 100644
Binary files a/backend/__pycache__/database.cpython-39.pyc and b/backend/__pycache__/database.cpython-39.pyc differ
diff --git a/backend/server.py b/backend/server.py
index f6625cf..16bf7b3 100644
--- a/backend/server.py
+++ b/backend/server.py
@@ -9,7 +9,7 @@ import database  # Imports the database.py you created earlier
 BASE_DIR = os.path.dirname(os.path.abspath(__file__))
 FRONTEND_DIR = os.path.join(BASE_DIR, '..', 'frontend')
 YML_PATH = os.path.join(BASE_DIR, 'directories.yaml')
-COMPS_ROOT = os.path.join(BASE_DIR, 'PDK_libs')
+COMPS_ROOT = os.path.join(BASE_DIR, '..\\PDK_libs')
 
 # Initialize Flask, pointing to the frontend folder for HTML/CSS/JS
 app = Flask(__name__, template_folder=FRONTEND_DIR, static_folder=FRONTEND_DIR)