The url entry in Home Server config must not contains / at the end

[huan]

Good

url: 'https://6faa5b07.ngrok.io'

Bad

url: 'https://6faa5b07.ngrok.io/'

Diff

- url: 'https://6faa5b07.ngrok.io/'
+ url: 'https://6faa5b07.ngrok.io'

Or, the matrix-appservice-bridge will get a 404 error like this:

❌ PUT //transactions/1 | 404 Not Found

Which the right log should be:

✔️ PUT /transactions/13 | 200 OK

See: wechaty/matrix-appservice#3

[Half-Shot]

As per #15, we've chosen to fix this on the synapse side matrix-org/synapse#6306