Flutter pubspec.yaml null sfety error solution

 The lower bound of "sdk: '>=2.5.0 <3.0.0'" must be 2.12.0 or higher to enable null safety.


I resolve this by:


flutter pub upgrade --major-versions


the other 2 code I run erlier is:


flutter pub get


and 


flutter pub get --no example


Which both resulting in error. The code : 


flutter pub upgrade --major-versions


is recommmend by terminal to resolve my issue. and all error on lib folder gone.




Comments

Post a Comment

Popular posts from this blog

How to Fix Common Astro Remote Problems

Image
Without astro remote, our decoder just like a non-functional decoder. Latest decoder such as beyond have no button at all (only power button..sigh) compare to old decoder which have some handy buttons. There are actually some trick you can do fix your remote: Volume and Mute Button Not Working. We get this a lot, whenever we press the Volume or the mute button it does not work. Actually it is simple to fix it, press the volume up (+) button together with the big OK button until LED indicator blink twice. Now your volume and mute button should work. In case it volume up did not work, try with the volume down (-) button. All button Not working Properly First of all this normally caused by weak battery. If you are lazy to buy one, remove the battery and smash it a little bit with hard stuff. Normally I just bite it with my teeth. the good advice would be buy a good battery and prepare additional battery. Reset your Remote Reset is handy trick to overcome any problem with our re...
Read more

TM Streamyx RM88 4Mbps Package with Free Tablet

Image
The Streamyx RM88 package actually a promo package which comes with 3 different packages to choose from. The monthly commitment is cheaper compare to the original packages pricing. In addition people who subscribe to this promo package will get a free Tablet. The original and normal pricing for TM Streamyx Packages are: However this promo package only provided by certain TM agent, which means you cannot directly apply with TM. The agent also provided with subscription Quota which means it is a limited offer and form what I heard it is limited to 100 subscription per agent. Where can I locate the Agent? It is hard to tell, however I found few agents promote this package on their blog and FB pages. The newest was posted on June 2015. So here what you need to know about this promo package: No Installation Fee (Normally RM50) No Activation Fee (Save RM75) No Quota (Unlimited , I'm not sure if this packages do have FUP, Fair Usage Policy which means the ISP have the...
Read more

4 Steps to Fix Dell Blinking Orange Light

Image
The blinking amber power button or also called Orange Light of Death is a common problem for Dell Desktop. The reason would be the electrical faulty on the Motherboard, front panel or Power supply. However most of the time the trick is to push the black button (of the Power Supply) twice. 4 steps with pictures: 1. Long press the blinking power button of  the front panel until the orange light goes away. 2. Locate the black button (of the power supply on the back panel) and long press until  you see a flashing orange light on the power button. You also could hear the sound of the CPU fan. 3. Release the button, and now long press it again (about 10 seconds). 4. Turn on your computer by pressing the power button and it should work.
Read more