Plugin breaks when trying to compile contracts using HTTP import directive

[fmorisan]

I've identified an issue where the plugin stops working whenever the contract to compile has a GitHub dependency.

Reproduction steps:

• Load the Celo plugin in Remix
• Create a new file
• Add the following content to the file: import "https://github.com/smartcontractkit/chainlink/blob/develop/evm-contracts/src/v0.4/LinkToken.sol";
• Try to compile from the Celo Plugin UI
• You should see the effects

Additional data - console output

react-dom.production.min.js:216 TypeError: Cannot convert undefined or null to object
    at Function.keys (<anonymous>)
    at fe (Compiler.tsx:170)
    at ro (react-dom.production.min.js:157)
    at Vs (react-dom.production.min.js:267)
    at Eu (react-dom.production.min.js:250)
    at Mu (react-dom.production.min.js:250)
    at xu (react-dom.production.min.js:250)
    at bu (react-dom.production.min.js:243)
    at react-dom.production.min.js:123
    at t.unstable_runWithPriority (scheduler.production.min.js:18)
ss @ react-dom.production.min.js:216
n.callback @ react-dom.production.min.js:216
da @ react-dom.production.min.js:131
hs @ react-dom.production.min.js:220
Cu @ react-dom.production.min.js:259
t.unstable_runWithPriority @ scheduler.production.min.js:18
Hi @ react-dom.production.min.js:122
Nu @ react-dom.production.min.js:252
bu @ react-dom.production.min.js:243
(anonymous) @ react-dom.production.min.js:123
t.unstable_runWithPriority @ scheduler.production.min.js:18
Hi @ react-dom.production.min.js:122
qi @ react-dom.production.min.js:123
Vi @ react-dom.production.min.js:122
du @ react-dom.production.min.js:237
ko @ react-dom.production.min.js:170
(anonymous) @ Compiler.tsx:75
s.emit @ events.js:153
(anonymous) @ connector.ts:60
l @ runtime.js:63
(anonymous) @ runtime.js:293
(anonymous) @ runtime.js:118
(anonymous) @ tslib.es6.js:74
l @ tslib.es6.js:70
(anonymous) @ connector.ts:38
(anonymous) @ connector.ts:46
l @ runtime.js:63
(anonymous) @ runtime.js:293
(anonymous) @ runtime.js:118
o @ tslib.es6.js:71
Promise.then (async)
u @ tslib.es6.js:73
(anonymous) @ tslib.es6.js:74
l @ tslib.es6.js:70
(anonymous) @ connector.ts:35
connector.ts:83 TypeError: Cannot convert undefined or null to object
    at Function.keys (<anonymous>)
    at fe (Compiler.tsx:170)
    at ro (react-dom.production.min.js:157)
    at Vs (react-dom.production.min.js:267)
    at Eu (react-dom.production.min.js:250)
    at Mu (react-dom.production.min.js:250)
    at xu (react-dom.production.min.js:250)
    at bu (react-dom.production.min.js:243)
    at react-dom.production.min.js:123
    at t.unstable_runWithPriority (scheduler.production.min.js:18)
(anonymous) @ connector.ts:83
l @ runtime.js:63
(anonymous) @ runtime.js:293
(anonymous) @ runtime.js:118
(anonymous) @ tslib.es6.js:74
l @ tslib.es6.js:70
(anonymous) @ connector.ts:38
(anonymous) @ connector.ts:46
l @ runtime.js:63
(anonymous) @ runtime.js:293
(anonymous) @ runtime.js:118
o @ tslib.es6.js:71
Promise.then (async)
u @ tslib.es6.js:73
(anonymous) @ tslib.es6.js:74
l @ tslib.es6.js:70
(anonymous) @ connector.ts:35

Screenshot: