diff --git a/aider/coders/base_coder.py b/aider/coders/base_coder.py
index 7bf4a0437..7255e91df 100755
--- a/aider/coders/base_coder.py
+++ b/aider/coders/base_coder.py
@@ -290,9 +290,10 @@ class Coder:
     def get_abs_fnames_content(self):
         for fname in list(self.abs_fnames):
             content = self.io.read_text(fname)
+            dump(fname, content)
             if content is None:
                 relative_fname = self.get_rel_fname(fname)
-                self.tool_error(f"Dropping {relative_fname} from the chat.")
+                self.io.tool_error(f"Dropping {relative_fname} from the chat.")
                 self.abs_fnames.remove(fname)
             else:
                 yield fname, content
diff --git a/aider/io.py b/aider/io.py
index 67f846bee..98a8a62f3 100644
--- a/aider/io.py
+++ b/aider/io.py
@@ -141,7 +141,10 @@ class InputOutput:
         try:
             with open(str(filename), "r", encoding=self.encoding) as f:
                 return f.read()
-        except (FileNotFoundError, UnicodeError) as e:
+        except FileNotFoundError:
+            self.tool_error(f"{filename}: file not found error")
+            return
+        except UnicodeError as e:
             self.tool_error(f"{filename}: {e}")
             return
 
diff --git a/tests/test_coder.py b/tests/test_coder.py
index 41ba7c768..b9bc9ad23 100644
--- a/tests/test_coder.py
+++ b/tests/test_coder.py
@@ -1,4 +1,5 @@
 import os
+import tempfile
 import unittest
 from unittest.mock import MagicMock, patch
 
@@ -7,6 +8,8 @@ import requests
 
 from aider import models
 from aider.coders import Coder
+from aider.dump import dump  # noqa: F401
+from aider.io import InputOutput
 
 
 class TestCoder(unittest.TestCase):
@@ -177,6 +180,35 @@ class TestCoder(unittest.TestCase):
         # Assert that print was called once
         mock_print.assert_called_once()
 
+    def test_run_with_file_deletion(self):
+        # Create a few temporary files
+        _, file1 = tempfile.mkstemp()
+        _, file2 = tempfile.mkstemp()
+
+        files = [file1, file2]
+
+        # Initialize the Coder object with the mocked IO and mocked repo
+        coder = Coder.create(
+            models.GPT4, None, io=InputOutput(), openai_api_key="fake_key", fnames=files
+        )
+
+        def mock_send(*args, **kwargs):
+            coder.partial_response_content = "ok"
+            coder.partial_response_function_call = dict()
+
+        coder.send = MagicMock(side_effect=mock_send)
+
+        # Call the run method with a message
+        coder.run(with_message="hi")
+        self.assertEqual(len(coder.abs_fnames), 2)
+
+        # Delete one of the files
+        os.remove(file1)
+
+        # Call the run method again with a message
+        coder.run(with_message="hi")
+        self.assertEqual(len(coder.abs_fnames), 1)
+
 
 if __name__ == "__main__":
     unittest.main()