Run Error when running jupyter notebook cell

When I run a cell in jupyter notebook I get this error

Run Error "expected a com.google.gson.JsonObject but was com.google.gson.JsonPrimitive"

I am on a configured jupyterhub server

Logs:

2019-08-22 14:09:06,912 [ 68878] WARN - ctions.ui.JupyterErrorReporter - Jupyter error 
com.google.gson.JsonSyntaxException: Expected a com.google.gson.JsonObject but was com.google.gson.JsonPrimitive
at com.google.gson.internal.bind.TypeAdapters$35$1.read(TypeAdapters.java:897)
at com.google.gson.Gson.fromJson(Gson.java:927)
at com.google.gson.Gson.fromJson(Gson.java:892)
at com.google.gson.Gson.fromJson(Gson.java:841)
at com.google.gson.Gson.fromJson(Gson.java:813)
at org.jetbrains.plugins.notebooks.jupyter.connections.execution.JupyterRestClient.get(JupyterRestClient.kt:151)
at org.jetbrains.plugins.notebooks.jupyter.connections.execution.JupyterRestClient.getKernelSpecs(JupyterRestClient.kt:87)
at org.jetbrains.plugins.notebooks.jupyter.connections.execution.core.JupyterClientImpl.getKernelSpecs(JupyterClient.kt:65)
at org.jetbrains.plugins.notebooks.jupyter.connections.execution.core.JupyterServerImpl.updateKernelSpecs(JupyterServers.kt:126)
at org.jetbrains.plugins.notebooks.jupyter.connections.execution.JupyterRuntimeServiceImpl.createSession(JupyterNotebookExecution.kt:204)
at org.jetbrains.plugins.notebooks.jupyter.connections.execution.JupyterRuntimeServiceImpl.createSessionSettings(JupyterNotebookExecution.kt:180)
at org.jetbrains.plugins.notebooks.jupyter.connections.execution.JupyterRuntimeServiceImpl.createSessionSettings$default(JupyterNotebookExecution.kt:178)
at org.jetbrains.plugins.notebooks.jupyter.connections.execution.JupyterRuntimeServiceImpl.getOrCreateSession(JupyterNotebookExecution.kt:108)
at org.jetbrains.plugins.notebooks.jupyter.connections.execution.JupyterCellExecutionManager.executeCode(JupyterCellExecutionManager.kt:112)
at org.jetbrains.plugins.notebooks.jupyter.connections.execution.JupyterCellExecutionManager.access$executeCode(JupyterCellExecutionManager.kt:38)
at org.jetbrains.plugins.notebooks.jupyter.connections.execution.JupyterCellExecutionManager$executeCode$$inlined$synchronized$lambda$1.run(JupyterCellExecutionManager.kt:79)
at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515)
at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
at java.base/java.lang.Thread.run(Thread.java:834)
2019-08-22 14:09:09,383 [ 71349] INFO - python.packaging.PyPackageUtil - Refreshing installed packages for SDK /Users/myname/Documents/projects/myproject/.venv/bin/python 
2019-08-22 14:09:09,383 [ 71349] INFO - packaging.PyPackageManagerImpl - Running packaging tool: /Users/myname/Documents/projects/myproject/.venv/bin/python /Users/myname/Library/Application Support/JetBrains/Toolbox/apps/PyCharm-P/ch-0/192.5728.105/PyCharm.app/Contents/helpers/packaging_tool.py list