'if' must have both main and 'else' branches if used as an expression

I have the code below working before, now compiler halts and marks both if statements and says:

'if' must have both main and 'else' branches if used as an expression

But as you see this is not an expression, but just a simple equality statement and a conditional statement next to it.

                    try {
                        val json_string = responseBody!!.string()
                        val jsonObject = JSONObject(json_string)
                        if (jsonObject.has("version")) {

                            val remoteVersion = jsonObject.getInt("version")
                            if (remoteVersion > BuildConfig.VERSION_CODE) {
                                handler.post {
                                    showInstallNewVersionDialog()
                                }
                            }
                        }
                    } catch (e: Exception) {
                        e.message?.let { Log.e(Constants.TAG, e.message!!) }

                    }

The funny part is if I added empty else tags, it will run but will warn to remove empty else statements:

                        if (jsonObject.has("version")) {

                            val remoteVersion = jsonObject.getInt("version")
                            if (remoteVersion > BuildConfig.VERSION_CODE) {
                                handler.post {
                                    showInstallNewVersionDialog()
                                }
                            } else {}
                        } else {}