Fix/hotfix tpos 2 (#783)

* fix older tpos without tips

* bad math requesting invoice

* make format

lnbits/server.py

@@ -1,17 +1,18 @@
+import click
 import uvicorn
 
-import click
 
 @click.command()
-@click.option('--port', default="5000", help='Port to run LNBits on')
-@click.option('--host', default="127.0.0.1", help='Host to run LNBits on')
+@click.option("--port", default="5000", help="Port to run LNBits on")
+@click.option("--host", default="127.0.0.1", help="Host to run LNBits on")
 def main(port, host):
     """Launched with `poetry run lnbits` at root level"""
     uvicorn.run("lnbits.__main__:app", port=port, host=host)
 
-if __name__ == '__main__':
+
+if __name__ == "__main__":
     main()
 
-#def main():
+# def main():
 #    """Launched with `poetry run start` at root level"""
 #    uvicorn.run("lnbits.__main__:app")