Try pip

.readthedocs.yaml

@@ -19,6 +19,8 @@ conda:
 python:
   install:
     - requirements: docs/requirements.txt
+    - method: pip
+      path: gprMax
 
 sphinx:
    configuration: docs/source/conf.py

docs/source/input_api.rst

@@ -114,7 +114,7 @@ The essential commands are:
 
 Domain
 ------
-.. autoclass:: cmds_singleuse.Domain
+.. autoclass:: gprMax.cmds_singleuse.Domain
 
 Discretisation
 --------------