Modpack version
1.66c

Can the issue be reproduced?
unknown

Logs
crash-2019-07-31_09.55.26-client.txt

Issue
when i use schematica it doesnt shows the blocks and mc crashes

According to the logs you are running Minecraft with the embedded JRE that comes with Twitch. This is a very old java version that causes a lot of issues and crashes.

Your problems most likely will be fixed when you:

1. Make sure you have a recent 64-bit Java installed and accessible through in your environment variables.
2. Go to the Twitch global settings page, then the Minecraft tab and then add a JVM argument -version:1.8+.

The steps above are detailed further in a pinned message in the #support channel of our Discord server.

If your problem persists after these changes, please feel free to reopen this issue and post a new log.

i downloaded latest java and its not even launching anymore and your code cant be deleted how you gonna fix that

Error could not crate the Java virtual machine Error a fatal exception has occurred Program will exit

I don't understand your comments. If you cannot get Java installed on your system and the path environment set up correctly I suggest you take a look at other means of installing the pack. This can be achieved through MultiMC or installing it by hand.

Keep in mind you need 64-bit Java.

it says error unable to locate jre meeting specifation 1.8+

now its not opening anymore

Did you install 64-bit Java 8 and added it to your path? Your system apparently cannot detect any Java installation.

Check https://www.java.com/en/download/help/path.xml for instructions on how to do this.

fw_error_www

fw_error_www

i did all you said BUT my mc is broken and i cant open any modpacks now you corrupted my mc please fix it

Continuing this on Discord.